We provide aldehydes, ketones and carboxylic acids practice exercises, instructions, and a learning material that allows learners to study outside of the classroom. We focus on aldehydes, ketones and carboxylic acids skills mastery so, below you will get all questions that are also asking in the competition exam beside that classroom.
List of aldehydes, ketones and carboxylic acids Questions
| Question No | Questions | Class |
|---|---|---|
| 1 | ( frac{1}{y} ) ( frac{8}{8} ) ( x ) |
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| 2 | A hydrocarbon ( C_{6} H_{10} ) absorbs only one molecule of ( boldsymbol{H}_{2} ) on catalytic hydrogenation. On ozonolysis, the hydrocarbon yields ( C H Oleft(C H_{2}right)_{4} C H O ) The hydrocarbon is: A. cyclohexene B. 1,5-hexadiene c. 1,3 -cyclohexadiene D. 1-methylcyclopentene |
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| 3 | Identify the rate of decarboxylation of isomeric pyridine acetic acids by the similar mechanism. ( A cdot 1>2>3 ) B. ( 1>3>2 ) c. ( 3>2>1 ) D. ( 2>1>3 ) |
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| 4 | Which of the following is a volatile liquid at room temperature? A. Ethanal B. Ethane c. Ethene D. None of these |
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| 5 | Major product of above reaction: A. ( C_{6} H_{5}-C H=C H-C O O H ) в. ( C_{6} H_{5}- ) СООН ( mathrm{c} cdot C_{6} H_{5}-C H=C H-C O O C H_{3} ) ( mathrm{D} cdot C_{6} H_{5} C H_{2} C H O ) |
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| 6 | From the list of alkenes given below, identify the alkenes which on ozonolysis give only ketones. (a) 2 methyl-1-butene (b) 1-butene (c) 2,3 -dimethyl-2-butene (d) 3 -methyl-2-pentene (e) 3,4 -dimethyl-3-hexene (f) 2,5-dimethyl-2,4-hexadiene ( A cdot a, b ) and ( c ) B. ( c ) and ( e ) only c. ( d, e ) and ( f ) D. ( c, d ) and ( e ) |
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| 7 | 45 Assertion (A) Aromatic aldehydes and formaldehyde undergo Cannizza reaction. Reason (R) Aromatic aldehydes are almost as reactive as formaldehyde. A |
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| 8 | 83. A hydrocarbon reacts with HI to give (X) which on reacting with aqueous KOH forms (Y). Oxidation of (Y) gives 3-methyl-2-butanone. The hydrocarbon is: (a) CH2CH=C-CH; (b) CH2 = CH – CH – CH3 CH3 CH3 (C) CH3 – CH2 – C = CH, (d) CH=C- CH-CH3 CH3 CHZ |
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| 9 | Major product X will be: ( mathbf{A} ) ( mathbf{B} ) ( mathbf{c} ) D. |
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| 10 | Boiling points of aldehydes and ketones are: A. higher than hydrocarbons and ethers B. higher than hydrocarbons but lower than ethers C. higher than ethers but lower than hydrocarbons D. lower than hydrocarbons and ethers |
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| 11 | Benzoin is: A. compound containing an aldehyde and a ketonic group B. ( alpha, beta- ) unsaturated acid c. ( alpha- )hydroxy aldehyde D. ( alpha- )hydroxy ketone |
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| 12 | Match the column- | 12 |
| 13 | Cyanohydrin of which of the following compound on hydrolysis gives optically active product? A . HCHO в. ( C H_{3} C H O ) c. ( C H_{3} ) COCH( _{3} ) D. All the above |
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| 14 | Which is most optimum site for EAS (Electrophilic Aromatic Substitution) in the given compound? |
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| 15 | What is the secondary suffix for aldehyde? A . -al B. – -one c. – -oic acid D. -oate |
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| 16 | Q. 31 Alkenes c-Cand carbonyl compounds (= both contain a t bond but alkenes show electrophilic addition reactions whereas carbonyl compounds show nucleophilic addition reactions. Explain. |
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| 17 | Benzoyl chloride on reduction with ( boldsymbol{H}_{2} / boldsymbol{P} boldsymbol{d}-boldsymbol{B} boldsymbol{a} boldsymbol{S} boldsymbol{O}_{4} ) produces A. Benzoic acid B. Benzyl alcohol c. Benzoyl sulphate D. Benzaldehyde |
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| 18 | Describe the following: (i) Cross aldol condensation (ii) Decarboxylation |
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| 19 | ( frac{x}{x} ) | 12 |
| 20 | Arrange the following compounds in an increasing order of their reactivity in nucleophilic addition reactions: ethanol, propanal, propanone, butanone |
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| 21 | An organic compound of molecular formula ( C_{3} H_{6} O ) did not give a silver mirror with Tollen’s reagent, but gave an oxime with hydroxylamine, it may be: A ( cdot C H_{3} C O C H_{3} ) в. ( C_{2} H_{5} C H O ) c. ( C H_{2}=C H-C H_{2}-O H ) D. ( C H_{3}-O-C H=C H_{2} ) |
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| 22 | Give the IUPAC name of the given compounds [ mathrm{CH}_{3}-mathrm{NH}-mathrm{CHO} ] |
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| 23 | Polarisation of electron in acrolein ( left(boldsymbol{C H}_{2}=boldsymbol{C H}-boldsymbol{C H}=boldsymbol{O}right) ) or resonance hybrid of acrolein can be written as: ( A ) [ stackrel{partial^{+}}{mathrm{CH}_{2}} ldots ldots ldots ldots ldots ] B. ( stackrel{partial^{-}}{mathrm{CH}}_{2} cdots ldots ldots ldots ldots+ldots 0^{+} ) ( c ) ( partial^{-} ldots ldots mathrm{CH}-mathrm{CH} cdots cdot mathrm{O}^{-} ) ( mathrm{CH}_{2} cdots-mathrm{O}^{-} ) D. ( stackrel{partial^{+}}{mathrm{CH}}_{2} cdots ldots+cdots cdot mathrm{CH}=ldots 0^{+} ) |
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| 24 | Clemmensen’s reduction reaction is: ( A ) в. ( C_{6} H_{5}-C O C H_{3}+ ) [ N H_{2} N H_{2} C_{2} H_{5} O N a C_{6} H_{5} C H_{2} C H_{3} ] c. ( C H_{3} C O C H_{3}+4 H I R e d quad P_{>} C H_{3} C H_{2} C H_{3} ) D. All the above |
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| 25 | 0 7 ( frac{d}{d x} ) |
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| 26 | When methane is heated with dioxygen in the presence of ( M o_{2} O_{3} ) catalyst, the organic product obtained is: A. methanal B. ethanol acid c. methanol D. ethanol E. 2-methyl propar-2-ol |
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| 27 | Arrange benzoic acid, 4-methyl benzoic acid and 4 -nitrobenzoic acid in increasing order of their acidic strength. |
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| 28 | Formaldehyde, is the first member of the aldehyde family is a at a ordinary temperature A . solid B. liquid c. gas D. none of these |
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| 29 | Compound ( (X) C_{4} H_{8} O ) decolourises Baeyer’s reagent. It undergoes hydrolysis on reaction with dil. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) and produces (Y) and (Z). Both (Y) and (z) give positive iodoform test. But, only (Y) gives positive Tollen’s test.Choose the correct statements. This question has multiple correct options ( A ) ( (Y) stackrel{a q_{1} N a O H(10 %) Delta}_{longrightarrow} C H_{3}-C H=C H-C H O ) B. Pyridinium chlorochromate (PCC) (z) ( c ) ( (mathrm{X}) frac{mathrm{B} mathrm{r}_{2} / mathrm{CCl}_{4}}{longrightarrow} mathrm{CH}_{2}-mathrm{CH}-mathrm{O}-mathrm{CH}_{2}-mathrm{CH}_{3} ) ( mathrm{Br} quad mathrm{Br} ) ( D ) [ (X) frac{(i) O_{3}}{(i j) Z n / H_{2} O}(Y)+text { other product } ] |
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| 30 | The reaction between ( C O_{2} ) and ( a ) Grignard regent will yield : A. An alkyl magnesium halide. B. an alcohol c. magnesium carbonate. D. a carboxylic acid |
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| 31 | Give the products formed on reductive ozonolysis with LAH and oxidative ozonolysis with ( H_{2} O_{2} ), from the compound 2mol butan – 2 – one. |
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| 32 | Match the Structure in column-I with their Common name given in column II. Matching can be one or more than one. |
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| 33 | Aldol condensation will not take place in: A. ( H C H O ) в. ( C H_{3} C H_{2} C H O ) ( mathbf{c} cdot C H_{3} C H O ) D. ( C H_{3} ) COCH( _{3} ) |
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| 34 | Question 3. Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzal chloride and then benzaldehyde from it. colectie TE |
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| 35 | Draw the structure(s) of the following compound: 3-Methylbutanal |
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| 36 | The major product P formed in the following reaction is: ( A ) B. ( c ) ( D ) ( E ) |
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| 37 | The products are : Products ( P, Q, ) and ( R ) are: ( (mathrm{I}) ) A. ( P Rightarrow I, Q ) and ( R Rightarrow | ) B. P and Q both I and II, ( R Rightarrow ) II C. ( P ) is both I and II, ( Q ) and ( R Rightarrow 1 ) D. ( P, Q, ) and ( R Rightarrow A | ) II |
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| 38 | Consider the following reaction: The compound ( D ) is an ortho-isomer and E is a ( p- ) isomer. The compounds ( D ) and ( E, ) respectively are : A. Phthalic acid and isophthalic acids B. Isophthalic and phthalic acids c. Terephthalic and phthalic acids D. Phthalic and terephthalic acids |
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| 39 | Which of the following is a true statement? A. Among the carbonyl compounds, ketones have slightly higher boiling points than the isomeric aldehydes. This is due to the presence of two electron releasing groups around the carbonyl carbon which makes them more polar. B. Among the carbonyl compounds, ketones have slightly lower boiling points than the isomeric aldehydes. This is due to the presence of two electron releasing groups around the carbonyl carbon which makes them more polar. C. Among the carbonyl compounds, ketones have slightly lower boiling points than the isomeric aldehydes. This is due to the presence of two electron releasing groups around the carbonyl carbon which makes them less polar. D. Among the carbonyl compounds, ketones have slightly higher boiling points than the isomeric aldehydes. This is due to the presence of two electron releasing groups around the carbonyl carbon which makes them less polar. |
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| 40 | The product ( ^{prime} boldsymbol{A}^{prime} ) is: A ( cdot C_{6} H_{5} C O C H_{3} ) В ( cdot C_{6} H_{5} ) СС ( mathbf{c} cdot C_{6} H_{5} C H O ) D. ( C_{6} H_{5} O H ) |
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| 41 | The increasing order of base strength of ( boldsymbol{C l}^{-} boldsymbol{C H}_{3} boldsymbol{C O O}^{-},^{-boldsymbol{O H}} ) and ( boldsymbol{F}^{-} ) is A ( cdot C l^{-}<F^{-}<C H_{3} C O O^{-}F^{-}>C H_{3} C O O^{-}>^{-} O H ) c. ( C H_{3} C O O^{-}<C l^{-}<F^{-}<^{-} O H ) D. None of these |
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| 42 | Cyclohexene on ozonolysis followed by a reaction with zinc dust and water gives compound (A). Compound (A) is: ( A ) B. ( c ) D. |
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| 43 | The olefin which on ozonolysis gives ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H O} ) and ( boldsymbol{C H}_{3} boldsymbol{C H O} ) is : A. 1 -butene B. 2-butene c. 1-pentene D. Pent-2-ene |
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| 44 | ( R-C H_{2}-C H_{2} O H ) can be converted to ( boldsymbol{R}-boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C H}_{2} boldsymbol{C O O H} . ) The correct sequence of reagents is: A ( cdot P B r_{3}, K C N, H_{3} O^{+} ) в. ( P B r_{3}, K C N, H_{2} ) c. ( K C N, H^{+} ) D. ( H C N, P B r_{3}, H^{+} ) |
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| 45 | Which aldehyde smell like bitter aImond? |
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| 46 | Draw the structure of the following compounds: 4-Methylpent-3-en-2-one |
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| 47 | ( boldsymbol{Y} stackrel{text {excess } H C l}{ } boldsymbol{H} boldsymbol{C} equiv boldsymbol{C} boldsymbol{H} stackrel{boldsymbol{O}_{3} / Z n, boldsymbol{H}_{2} boldsymbol{O}}{boldsymbol{N}} boldsymbol{X} ) ( X, Y ) respectively are : A ( cdot C O_{2}, C H_{3} C H C l ) B. ( mathrm{CO}_{2}, quad_{mathrm{Cl}}^{mathrm{CH}_{2}-mathrm{CH}_{2}} mathrm{Cl} ) ( c ) ( mathrm{H}_{mathrm{O}}^{mathrm{C}-mathrm{C}}_{mathrm{O}}^{-mathrm{H},}, mathrm{CH}_{3}-mathrm{CHCl}_{2} ) D. ( underset{|}{|}_{mathrm{O}}^{mathrm{C}-mathrm{C}-mathrm{H},} underbrace{mathrm{CH}_{2}-}_{mathrm{O}} frac{mathrm{CH}_{2}}{mathrm{Cl}} mathrm{Cl} ) |
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| 48 | The IUPAC name of succinic acid is Butane-1,4-dioic acid. If true enter ( 1, ) if false enter 0 |
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| 49 | Why the lower members of aldehyde and ketone are soluble in water while higher members are sparingly soluble or insoluble in water? |
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| 50 | Which of the following structures is not correctly matched? ( A ) ( H_{3} ) ( alpha ) – Methoxypropionaldehyde ( -H_{3} C-C H-C-H ) в. 3-Hydroxybutanal – ( C H_{3}-C H-C H_{2} C H O ) ( c ) 4 – Oxopentanal ( -C H_{3} C H_{2} C H_{2}-C_{-} C H O ) D. Di-sec. -butylketone – ( C H_{3} C H_{2}-C H-C-C H ) ( C H_{2} C H_{3} ) |
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| 51 | Write the product of this reaction: [ left.left.left.right|_{mathrm{OH}} ^{mathrm{CH}_{2}} frac{mathrm{CH}}{mathrm{OH}} frac{mathrm{CH}-mathrm{CH}_{2}}{mathrm{OH}}right|_{mathrm{OH}} ^{mathrm{HIO}_{4}}right) ] |
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| 52 | Write te structural formula and names of all four possible aldol condensation products from ethanal and propanal |
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| 53 | ( underbrace{n}_{n} ) | 12 |
| 54 | The boiling point of Propanone is: ( A cdot 321 K ) в. з29 к ( c . ) ззо ( k ) D. 340 K |
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| 55 | Yield of each step as actually carried out in laboratory is given above each arrow. What is overall yield of the reaction? A . 60% в. 21% c. ( 40 % ) D. 68% |
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| 56 | Which of the following will not given butanoic acid as one of the product? ( mathbf{A} cdot C H_{3} C H_{2} C H_{2} B r frac{M g}{E t h e r} quad underbrace{(i) C O_{2}}_{(i i) H C l / H_{2}} ) B ( cdot C H_{3} C H_{2} C H_{2} B r stackrel{N a C N(a q)}{longrightarrow} stackrel{H^{+} / H_{2} O}{longrightarrow} ) c. ( _{C H_{3} C H_{2} C H O+H C N} stackrel{H^{+}+H_{2} mathcal{O}}{longrightarrow} ) D. ( C H_{3} C H_{2} C H_{2} C H=C H_{2 H^{+} / H_{2} O}^{K M n O_{4}} ) |
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| 57 | Identify the compounds which give yellow precipitate with ( boldsymbol{I}_{2}+ ) NaOH (a) Ethyl alcohol (b) Acetone (c) Propyl alcohol (d) 2-propanol (e) 3 – butanone (f) Butanal ( A cdot c, e ) and ( f ) B. a, dand f c. e, f and a D. a, b and d |
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| 58 | Which product is formed? | 12 |
| 59 | Which of the following is solid at room temperature? A. Acetaldehyde B. Paraldehyde c. Metaldehdye D. All of the above. |
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| 60 | What is D? | 12 |
| 61 | What is Rosenmund’s reaction? What is the purpose of adding ( B a S O_{4} ) in this reaction? |
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| 62 | Identify the relation between molecular mass and boiling point in aldehydes and ketones. | 12 |
| 63 | Which of the following compounds is the reactant in Rosenmund’s reaction? A. ( C H_{3} C O O C H_{3} ) в. ( C H_{3} C H O ) c. ( C H_{3} C H_{2} C l ) D. ( C H_{3} C O C l ) |
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| 64 | ( boldsymbol{H}_{2} boldsymbol{O}^{18}+boldsymbol{N} boldsymbol{a} rightarrow underset{(b a s e)}{(boldsymbol{A})}+(boldsymbol{B}) ) ( o ) ( boldsymbol{C H}-mathbf{3}-stackrel{|}{boldsymbol{C}}-boldsymbol{O}-boldsymbol{C} boldsymbol{H}_{2}-boldsymbol{C} boldsymbol{H}_{3}+ ) ( (A) rightarrow(C)+(D) ) alcohol Product ( (C) ) of the reaction is: ( ^{mathbf{A}} cdot_{C H_{3}-C-_{18}^{|}}^{0}-H ) в. ( quad stackrel{o^{prime 8}}{N}-O-H ) [ C H_{3}-C-O-H ] D. [ C H_{3}-C-O^{ominus} N_{a}^{oplus} ] |
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| 65 | One girl student uses the liquid compound to remove nail paint from her nail. The liquid compound removes the nail paint from her nail. Give the name of this compound. A . Acetic acid B. Formalin c. Ethanol D. Propanone |
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| 66 | ( d ) 0 ( d ) ( d ) |
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| 67 | Arrange the following in decreasing order of acidic strength. I. Benzoic acid II. 4 -nitrobenzoic acid III. 3,4 -dinitrobenzoic acid IV. 4-methoxy benzoic acid ( A cdot|||>||>|>mid V ) B. |||>|| > IV > | c. ( |>| backslash>mid v>1 ) D. |> || > || > IV |
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| 68 | Which of the following reactions will not resulting the formation of carbon- carbon bonds? A. Reimer-Tieman reaction B. Cannizaro reaction c. Wurtz reaction D. Friedel-Crafts acylation |
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| 69 | Which is not a reversible reaction? A. Base-promoted ester hydrolysis B. Claisen condensation c. Acid catalyst ester hydrolysis D. Acetal formation |
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| 70 | The conversion of acid chlorides into aldehydes by reduction is termed A. Clemenson’s reduction B. Wolf-Kishner reaction c. Rosenmund reduction D. McMurry reaction |
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| 71 | Which of the following reagents convert the acid chloride into aldehyde? ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{C O}-boldsymbol{C l} rightarrow ) ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{C H O} ) A. ( H_{2}, P d, B a S O_{4} ) B . ( left(C H_{3}-C H_{2}-C H_{2}-C H_{2}right)_{3} ) SnH c. LiAlH( _{4} ) D. Nah |
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| 72 | 1-phenylethyne gives ( C_{6} H_{5} C H_{2} C H O ) as a product on hydroboration-oxidation reaction. Enter 1 if true else 0 |
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| 73 | The organic compouds ( A ) and ( B ) react with sodium metal and release ( boldsymbol{H}_{2} ) gas. A and B react with each other to given ethyl acetate. Then ( A ) and ( B ) are A. ( C H_{3} ) COOHand ( C_{2} H_{5} ) OH в. ( H C O O H a n d C_{2} H_{5} O H ) c. ( C H_{3} ) COOHand ( C H_{3} ) OH D. ( C H_{3} ) СООНапдНСООН |
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| 74 | Write the IUPAC names of the following ketone. If possible, give the common name(s) also. PhCOPh |
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| 75 | In Rosenmund reactions, presence of ( B a S O_{4} ) acts as for Pd. A. promoter B. moderator c. inhibitor D. poison |
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| 76 | Which ( beta-k e t o ) acid shown will not undergo decarboxylation? ( A ) B. ( c ) D. |
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| 77 | Product ( (A) ) is: Снз ( -c equiv c- ) сн ( _{3} ) Соыа КМпо ( _{4}(t) ) ( mathbf{C H}_{3}-mathbf{C H}_{2}-mathbf{U}-mathbf{C}-mathbf{H} ) ( mathbf{C H}_{3}-mathbf{U}-| ) ( mathbf{O H} mathbf{~ O H} ) ( mathbf{C H}_{3}-mathbf{C H}-mathbf{C H}-mathbf{C H}_{3} ) ( o=C H-C H ) ( h ) |
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| 78 | Convert the above compound and note that ( K M n O_{4} ) can cause cleavage of the ring in the presence of the activating OH) group. |
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| 79 | Which of the following is/are true statement(s)? A. Aldehdyes and ketones are polar compounds B. Many naturally occuring aldehydes and ketones have been used in blending of perfumes and flavouring agents. C. The ketones are good solvents. D. All of the above. |
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| 80 | Aldehydes other than formaldehyde react with Grignard’s reagent to give addition products which on hydrolysis give: A. tertiary alcohols B. secondary alcohols c. primary alcohols D. carboxylic acids |
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| 81 | The general formula of carboxylic acids is: A ( . C_{n} H_{n} ) СООН B. ( C_{n} H_{2 n-1} ) c. ( C_{n} H_{2 n-2} ) COOH D. ( C_{n} H_{2 n+1} C O O H ) |
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| 82 | Decreasing order of rate of electrophilic aromatic substitution is: A ( . a>b>c>d ) в. ( a>c>b>d ) c. ( b>a>c>d ) D. ( b>c>a>d ) |
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| 83 | What happens when acetic acid is treated with carbonate salt? Name the gas produced. What happens when this gas is treated with lime water? Support your answer with equations |
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| 84 | ( boldsymbol{C H}_{3}-boldsymbol{C O O H}+boldsymbol{X} rightarrow ) Fruity smell compound. Then, X is : A. aldehyde B. chloroform c. alcohol D. base |
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| 85 | What is the name of the above reaction? A. Williamson’s synthesis B. Gatterman-Koch process c. Etard reaction D. Hoffmann elimination reaction |
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| 86 | In a set of the given reactions, acetic acid yields a product ( C . ) Product ( C ) would be: ( boldsymbol{C H}_{3} boldsymbol{C O O H}+boldsymbol{P C l}_{5} rightarrow ) ( boldsymbol{A} frac{C_{6} boldsymbol{H}_{6}}{text {Anhy.AlCl}_{3}} boldsymbol{B} frac{C_{2} boldsymbol{H}_{5} M boldsymbol{g} boldsymbol{B r} / text {ether}}{(i i) boldsymbol{H}^{+}} boldsymbol{C} ) A ( cdot C H_{3} C H(O H) C_{2} H_{5} ) в. ( C H_{3} C O C_{6} H_{5} ) c. ( C H_{3} C H(O H) C_{6} H_{5} ) D. ( quad c_{2} ), и( _{5} ) [ C H_{3}-C-(O H) C_{6} H_{5} ] |
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| 87 | Consider the above sequence and answer the following [ text { Conversion } boldsymbol{R}-boldsymbol{C H} boldsymbol{O} rightarrow boldsymbol{R}-boldsymbol{C O}_{2} boldsymbol{H} ] can be done by : ( mathbf{A} cdot K M N O_{4} ) ( mathbf{B} cdot H_{2} C r O_{4} ) ( mathbf{c} cdot K_{2} C r_{2} O_{7} ) D. All of these |
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| 88 | In the reaction sequence: ( boldsymbol{C H}_{3}-boldsymbol{C} equiv boldsymbol{C}-boldsymbol{H} frac{boldsymbol{C H}_{3} M boldsymbol{g} boldsymbol{B r}}{longrightarrow} boldsymbol{C H}_{4}+ ) ( (boldsymbol{A}) frac{(i) C O_{2}}{(i i) H_{2} O / H^{oplus}}(B) ) (B) will be : A ( cdot C H_{3}-C equiv C-C H_{3} ) B . ( C H_{3}-C equiv C-M g B r ) c. ( C H_{3}-C equiv C- ) COOH D. ( C H_{3}-C H equiv C H-C O O H ) |
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| 89 | Which of the following hydrocarbon acids will be a constituent of the highest melting point? ( A ) B. ( c ) ( D ) |
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| 90 | Match the following and write the order for ABCD. List List – II 1) Conc A) Decarboxylating agent [ H_{2} S O_{4} / 170^{0} C ] B) Dehydrohalogenating 2) ( mathrm{NaOH}+mathrm{CaO} ) agent C) Dehalogenating agent 3) ( Z n ) dust D) Dehydrating agent 4) aq ( K O H ) 5) alcoholic ( K O H ) A . 1234 B. 2 4 31 ( c cdot 2531 ) D. 1534 |
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| 91 | Which of the regents will convert a nitrile to corresponding aldehyde? A ( cdotleft(text { i) } L i A l H_{4} text { (ii) } H_{3} O^{+}right. ) B . (i) ( D I B A L-H ) (ii) ( H_{3} O^{+} ) c. ( N a O H, H_{2} O, ) Heat D. ( N a B H_{4} ) |
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| 92 | State the IUPAC names of the following compounds: (i) ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{O H} ) (ii) ( boldsymbol{H} boldsymbol{C} boldsymbol{O} boldsymbol{O} boldsymbol{H} ) (iii) ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}=boldsymbol{C H}_{2} ) |
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| 93 | Which order is coorect about auidity? ( mathbf{A} cdot C H_{3} C O O H>C_{6} H_{5} C O O H>C_{6} H_{5} O H ) B ( cdot C_{6} H_{5} C O O H>C H_{3} C O O H>C_{6} H_{5} O H ) ( mathbf{c} cdot C_{6} H_{5} O H>C_{6} H_{5} C O O H>C H_{3} C O O H ) ( mathbf{D} cdot C_{6} H_{5} O H>C H_{3} C O O H>C_{6} H_{5} C O O H ) |
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| 94 | Which of the following IUPAC names is not correctly matched? ( A ) cì B . ( left(C H_{3}right)_{2} C=C H C O O H: 3 ) – Methylbut- 2 -enoic acid c. ( P h C H_{2} C H_{2} C O O H: ) 3-Phenylpropanoic acid ( D ) Trinitr |
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| 95 | 78. Which ester on pyrolysis gives isobutylene? (a) CH3-CH2-CH2-O-C-CH3 (b) CH,COOCH,CH,CH, (C) CH,COOCH, -CH(CH3)2 (d) All the above |
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| 96 | Formalin is the commercial name of : A. formic acid B. fluoroform c. ( 40 % ) aqueous solution of methanal D. paraformaldehyde |
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| 97 | Oxalic acid is found in: A. spinach B. amla c. grapes D. unripe mangoes |
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| 98 | Sodium phenoxide when heated with ( C O_{2} ) under pressure at ( 125^{0} C ) gives A. Salol B. Salicylaldehyde c. Sodium benzoate D. Sodium salcylate |
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| 99 | Which of the following compounds gives acetone ( left(C H_{3}right)_{2} C=o ) as one of the product of its ozonolysis? ( A ) B. ( c ) ( D ) |
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| 100 | Which of the following names is correct for ( boldsymbol{C H}_{2}-boldsymbol{C H}-boldsymbol{C H}_{2} ? ) begin{tabular}{lll} CHO & CHO & CHO \ hline end{tabular} A. 3- Formaldehyde-1,3-dial B. 1,2,3- Triformaylpropane c. 2-Formylmethylbutane-1,4-dial D. Propane-1,2,3-tricarbaldehyde |
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| 101 | Reaction by which Benzaldehyde cannot be prepared is: ( mathbf{A} ) in ( mathrm{CS}_{2} ) followed by ( mathrm{H}_{3} mathrm{O}^{-} ) ( B ) in presence of Pd-BaSO ( mathbf{C} ) presence of anhydrous AlCl D. and conc. HCl |
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| 102 | An electrophilic reagent must have? A. A vacant orbital B. An orbital containing one electron C. An orbital containing two electron D. All completely filled atomic orbitals |
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| 103 | CH2CHO_) CH3MgBr 0.9 Compounds A and C in the following reaction are …….. Hydroboration oxidation (ii) H2O (a) identical (b) positional isomers (c) functional isomers (d) optical isomers Zobanata |
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| 104 | Carbonyl group is converted into methylene group by? A. Acidic reduction B. Raney Ni c. Basic hydrolysis D. Normal Hydrogenation |
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| 105 | Write the IUPAC name of the following compound: ( o ) ( boldsymbol{C H}_{2}=boldsymbol{C H}-stackrel{|}{boldsymbol{C}}-boldsymbol{C} boldsymbol{H}_{3} ) |
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| 106 | Q Type your question pill the Compound (H) is: 4 B. ( c ) ( D ) |
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| 107 | The products of (A) on ozonolysis followed by oxidation with ( boldsymbol{H}_{2} boldsymbol{O}_{2} ) are : ( A ) B. ( c ) ( D ) |
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| 108 | ( frac{a-x}{a} ) ( a ) |
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| 109 | Correct IUPAC name of the given compound is A. Anthranilic acid B. 2-carboxylbenzamine c. 2-Aminobenzoic acid D. 2-Aminocarboxylic acid |
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| 110 | Which of the following chemical is used in removing ink stain from clothes? A. Ethyl alcohol B. Glycol c. Banzoic acid D. Oxalic acid |
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| 111 | What is the value of ( X ) and ( Y ? ) Report your answer as ( (X Y) ) |
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| 112 | Acetic acid is present in vinegar. Curd contains A . lactic acid B. tartaric acid c. picric acid D. None of the above |
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| 113 | Draw structures of the following derivatives. (i) The 2,4 -dinitrophenylhydrazone of benzaldehyde (ii) Cyclopropanone oxime (iii) Acetaldehydedimethylacetal (iv) The semicarbazone of cyclobutanone (v) The ethylene ketal of hexan-3-one (vi) The methyl hemiacetal of formaldehyde |
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| 114 | What are the functional groups present in the given compound? A. Ester and ether B. Ester and amine c. Ester and carboxylic acid D. Ether and carboxylic acid E. Ether and ketone |
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| 115 | By which reaction ketal is formed? A. Glycol with acetone B. Hydration of glycol c. condensation of glycol D. Glycol with acetaldehyde |
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| 116 | ord sto ob ort | 12 |
| 117 | The compound ( (X) ) is: ( mathbf{A} cdot P h C O O N a ) B. ( mathbf{c} ) D. ( P h-C H=C H-P h ) |
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| 118 | Identify the organic compound: HOOC ( -left(boldsymbol{C H}_{2}right)_{2}-boldsymbol{C O O H} ) |
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| 119 | Benzoic acid does not undergo FriedelCrafts reaction due to ( – ) – of the benzene ring by the – – – – – effect of -COOH group. A. Activation, electron donating B. Activation, electron withdrawing c. Deactivation, electron donating D. Deactivation, electron withdrawing |
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| 120 | formula ( left(C_{8} H_{10}right) .(A) ) is oxidized by a strong oxidizing agent to (B). (B) on dehydration and subsequent reaction with ammonia forms an imide, (C). (C) is then reacted with a strong inorganic base to form a compound that undergoes Hoffman bromamide reaction to give (D). (D) is treated with sodium nitrite in an ice cold acidic solution to form the product (E). (E) is a steam volatile compound and on nitration gives two mononitro derivatives. (E) is treated with sodium hydroxide to form the salt (F). On heating a solution of (F), bubble are formed due to release of gas. This gas does not burn. On analysis it was found that the gas has two components, one lighter than air and one heavier than air. Compound ( (B) ) is : A. Phthalic acid B. Isophthalic acid c. Terephthalic acid D. Benzoic acid |
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| 121 | A and B are: ( mathrm{B} prec mathrm{NaBH}_{4}langlequad mathrm{CH}=mathrm{CH}-mathrm{CHO} stackrel{mathrm{H}_{2} / mathrm{Pt}}{longrightarrow} mathrm{A} ) ( A ) ( leftlangle-mathrm{cH}_{2} mathrm{CH}_{2} mathrm{cHo},langlequadrangle_{mathrm{CH}}=mathrm{cH}-mathrm{cH}_{2} mathrm{OH}right. ) ( c ) ( leftlanglemathrm{CH}=mathrm{CH}-mathrm{CH}_{2} mathrm{OH} ) in both cas right. ( D ) ( leftlanglemathrm{CH}_{2} mathrm{CH}_{2} mathrm{CH}_{2} mathrm{OH} ) in both cases right. |
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| 122 | 210. Find incorrect product in following reactions. (a) Ph=C=CH HBr → PhầC=CH, Br HBr (b) Ph-C=CH ABEL> Ph-C=CHB pero Br (1)BHZ.THF (C) CH3CH2C=CH – (2)BH COOD CH3CH, (1)BD, THF (d) CH2CH2C=CH (2)CH,COOH CH3CH, H C=C DH |
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| 123 | When o-xylene is oxidised with alkaline ( K M n O_{4}, ) the product is A. Terephthalic acid B. Phthalic acid c. Benzoic acid D. Salicylic acid |
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| 124 | ( boldsymbol{C H}_{3}-boldsymbol{C H}=boldsymbol{C}left(boldsymbol{C H}_{3}right)_{2} frac{boldsymbol{O}_{3}}{left(boldsymbol{C H}_{3}right)_{2} boldsymbol{S}} ? ) Products obtained at the end of the reaction when given compound is subjected to ozonolysis are: A. acetaldehyde B. propanaldehyde c. acetone, acetaldehyde D. acetone, formaldehyde |
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| 125 | 79. Electrochemical oxidation of the succinate ion (1, 4-butanediate ion) into ethylene proceeds through the formation of the intermediate (a) CH, CH2-C0 (C) CH2 – CH; (6) o-C-CH2-CH, CO (d) CH2 = CH® |
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| 126 | General formula of saturated monocarboxylic acid is : A. ( C_{n} H_{2 n+1} ) COOH в. ( C_{n} H_{2 n} O_{2} ) c. Both A and B D. None of the above |
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| 127 | Acetone can not be obtained from: A. hydrolysis of isopropylidene chloride B. hydration of propyne C. dehydrogenation of isopropyl alcohol D. hydrolysis of ester |
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| 128 | ( x ) ( c ) ( = ) |
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| 129 | Which is the correct method of synthesising acetamide from acetone? A ( cdot C H_{3} C O C H_{3} stackrel{P d / B a S O_{4}}{longrightarrow} C H_{3} C H O stackrel{N H_{3}}{longrightarrow} ) ( C H_{3} C H_{2} N H_{2} stackrel{H_{2} O}{longrightarrow} C H_{3} C O N H_{2} ) в. ( C H_{3} C O C H_{3} frac{I_{2}}{N a O H} C H_{3} C O O N a frac{H^{+}}{N H_{3}} ) ( C H_{3} C O O N H_{4} stackrel{Delta}{longrightarrow} C H_{3} C O N H_{2} ) c. ( C H_{3} C O C H_{3} stackrel{C r O_{3}}{longrightarrow} C H_{3} C O O H stackrel{N H_{3}}{longrightarrow} C H_{3} C O N H_{2} ) D. ( C H_{3} C O C H_{3} frac{I_{2}}{_{N a O H}} C H_{3} C O O H stackrel{H C l}{longrightarrow} ) ( C H_{3} C O C l stackrel{N H_{3}^{3}}{longrightarrow} C H_{3} C O N H_{2} ) |
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| 130 | (major) is : ( A ) в. c. D. |
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| 131 | Compound ‘A’ on chlorination gives compound ‘B’, compound ‘B’ reacts with alc. KOH gives gas ‘C’, which decolourizes Baeyer’s reagent and ozonolysis of compound ‘C’ gives only HCHO compound. Then compound ‘A’ is: A. ( C_{2} H_{6} ) в. ( C_{2} H_{4} ) c. ( C_{4} H_{10} ) D. ( C_{2} H_{5} C l ) |
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| 132 | What is the acidity order of the following compounds? ( mathbf{A} cdot I>I I>I I I>I V>V ) ( mathbf{B} cdot I I>I I I>I V>V>I ) ( mathbf{c} cdot V>I I I>I>I I>I V ) D. ( V>I I I>I I>I>I V ) |
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| 133 | The smell of bitter almond is given by the compound: A. benzoic acid B. benzaldehyde c. vanilin D. cinnamaldehyde |
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| 134 | When acetaldehyde is reacted with LiAIH4 what is the product formed? A. ( C H_{3} ) СООН в. ( C H_{3} C H_{2} ) ОН ( mathbf{c} cdot C H_{3} O H ) D. нсоон |
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| 135 | Draw the structure of the hexanal molecule. |
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| 136 | Acid catalysed hydrolysis of the cyclic acetal gives: A. ethanal and 2 -chlorocyclohexanol B. ethanol and 2 -chlorocyclohexanol C. 1,2 -ethanediol and 2 -chlorocychlohexanone D. 1,2 -ethanediol and 2 -chlorocyclohexanol |
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| 137 | The final product in the given reaction is: ( A ) B ( c ) D. A and B both |
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| 138 | The best method to purify impure acetone is: A. ( quad C H_{3} C O C H_{3}+H C l rightarrow C H_{3}-C_{I l}^{D H}-C H_{3} stackrel{h e a t}{longrightarrow} ) ( C H_{3} C O C H_{3} ) B. ( quad C H_{3} C O C H_{3}+N a H S O_{3} rightarrow C H_{3}-C_{I}^{D H}- ) ( S O_{3} N a stackrel{N a_{2} C O_{3}}{longrightarrow} C H_{3} C O C H_{3} ) ( mathrm{c} ) ( C H_{3} C O C H_{3} ) D. [ C H_{3} C O C H_{3}+H_{2} S O_{4} rightarrow C H_{3}-quad C_{1}^{prime} C_{3}-C H_{3} stackrel{text { Heat}}{longrightarrow} ] ( C H_{3} C O C H_{3} ) |
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| 139 | Write the IUPAC name of the compound: [ begin{array}{cc} boldsymbol{C H}_{3}-boldsymbol{C H}-boldsymbol{C H}_{2}-boldsymbol{C}-boldsymbol{C H}_{3} \ mid & | \ boldsymbol{O H} & boldsymbol{O} end{array} ] |
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| 140 | With in each set, select the compound which is more reactive to nucleophilic addition at carbonyl carbon. ( (I) C H_{3} C O C H_{2} C H_{2} B r ) or ( C H_{3} C O C ) ( (boldsymbol{I I}) boldsymbol{C H}_{3} boldsymbol{C H O} ) or ( boldsymbol{C H}_{3} boldsymbol{C O C H}_{3} ) ( (I I I) C H_{3} C O C H_{3} ) or ( C H_{3} C O C F_{3} ) ( (I V) P h C H O ) or ( C H_{3} C H O ) |
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| 141 | Which of the following reactions is called Rosenmund reaction? A. Aldehydes are reduced to alcohols B. Acids are converted to acid chlorides c. Alcohols are reduced to hydrocarbons D. Acid chloride are reduced to aldehydes |
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| 142 | Assertion ( A beta ) keto acid is decarboxylated to a ketone on simple heating, even in absence of sodalime catalyst. Reason A resonance stabilized carbonion is formed A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
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| 143 | Quinaine is obtained from- A. Bark B. Fruit c. Leaves D. Roots |
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| 144 | The compounds ( (A) ) and ( (B) ) in the equation given above are: ( mathbf{A} cdot C H_{3} C O O H quad C H_{3} C H_{3} ) B. ( D C H_{2}-C O O D quad C H_{4} ) ( mathbf{c} cdot D C H_{2}-C O O H quad C H_{2} D_{2} ) ( mathbf{D} cdot C h_{3}-C O O D quad C H_{3} D ) |
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| 145 | A carbonyl compound on reaction with ilute ( N a O H ) gives 2 -ethyl-3 hydroxyhexanal. The carbonyl compound is : A. propanal B. propanone c. butanal D. butanone |
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| 146 | 2,4 DNP reacts with carbonyls (aldehyde/ketones) to give yellow ppt. This reaction is dehydration type reaction as shown above. A mixture of benzaldehyde and formaldehyde is heated with 2,4 DNP. |
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| 147 | Which of the following statements is/are correct? This question has multiple correct options ( mathbf{A} cdot ) The common name of ( left(H O O C-C H_{2}-C O O Hright) ) is malonic acid B. The common name of is succinic acid is butanedioic acid C. The IUPAC name of ( left(C H_{2}=C H-O C O C H_{3}right) ) is vinyl acetate D. The IUPAC name of acrylonitrile is pror-2-enenitrile. |
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| 148 | The weakest acid among the following is A. ( C H_{3} ) СООН в. ( C H_{3} C H_{2} C O O H ) c. ( left(C H_{3}right)_{2} ) СНСООН D. ( left(C H_{3}right)_{3} C C O O H ) |
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| 149 | Which of the followings is a tricarboxylic acid? A . Citric acid B. Malonic acid c. succinic acid D. Malic acid |
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| 150 | Give chemical equations for Etard reaction. | 12 |
| 151 | Which of the following order of acidic strength is correct: ( mathbf{A} cdot R C O O H>R O H>H O H>H C equiv C H ) B . ( R C O O H>H O H>R O H>H C equiv C H ) c. ( R C O O H>H O H>H C equiv C H>R O H ) D . ( R C O O H>H C equiv C H>H O H>R O H ) |
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| 152 | The compound (C) is: (D) ( quad(mathrm{C})+mathrm{CO}_{2} ) [ begin{array}{ll} left(mathrm{C}_{4} mathrm{H}_{6} mathrm{O}_{2}right) & left(mathrm{C}_{3} mathrm{H}_{6} mathrm{O}right) \ text { Acid } & end{array} ] ( A ) B. ( c ) D. |
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| 153 | In order to extract isobutyric acid from a solution of diethyl ether, one should wash the solution with: A. one ( 30 m L ) wash of water B. three ( 10 m L ) washes of water c. one ( 30 m L ) wash of hexane D. three ( 10 m L ) washes of hexane |
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| 154 | Amongst the following carboxylic acids, the strongest acid is (for first dissociation of dicarboxylic acid): ( A ) в. c. ( C H_{3} C H_{2} C O O H ) D. ( C H_{3} ) COOH |
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| 155 | ( frac{j}{d} ) | 12 |
| 156 | Acids have much higher boiling points than isomeric esters because: A. Acids form dimers by H-Bonding B. Acids are volatile in steam c. Ester are non-volatile D. Acids can ionise to give protons in aqueous solution |
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| 157 | In the formation of compound (E) from (A), the name of the reaction is: A. Elbs persulphate oxidation B. Mannich reaction c. Dakin’s reaction D. Oppenauer oxidation |
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| 158 | Which of the following doesn’t use acetaldehyde as a starting material in its preparation? A. Ethyl acetate B. Ethanoic acid c. Methanoic acid D. Drugs |
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| 159 | Corrosive sublimate ( left(H g C l_{2}right) ) can be used to distinguish between: A. formaldehyde and propanone B. formic acid and acetic acid c. acetaldehyde and butanone D. all of the above |
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| 160 | Aldehydes on oxidation gives A. Alcohol B. Acid c. Ketone D. Ether |
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| 161 | Which of the following acid does not have – COOH group? A . Picric acid B. Ethanoic acid c. Benzoic acid D. Salicylic acid |
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| 162 | Write the structure of 2-hydroxybenzoic acid. | 12 |
| 163 | Conversion of esters to aldehydes can be accomplished by: A. Stephen reduction B. Rosenmund reduction c. Reduction with lithium aluminium hydride D. Reduction with diisobutyl aluminium hydride |
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| 164 | One mole of an organic compound requires 0.5 moles of oxygen to produce a carboxylic acid. The compound may be: A. alcohol B. ether c. ketone D. aldehyde |
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| 165 | The molecular weight of acetone is ( mathrm{M} ) The molecular weight of diacetone alcohol is: A. B. M/2 ( c . ) २м D. 3M |
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| 166 | The reagent that gives an acid chloride on treatment with a carboxylic acid is? This question has multiple correct options A ( cdot P C l_{5} ) в. ( P C l_{3} ) c. ( operatorname{socl}_{2} ) D. ( (C O C l)_{2} ) |
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| 167 | a) Define “Esterification” b) Write any three uses of ethanol |
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| 168 | Draw the structural formula of Ethanoic acid. |
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| 169 | The carboxylic acid includes the functional group: A. carboxyl and amine group B. carboxyl and amide group c. carboxyl and hydroxyl group D. carboxyl and amine functional group |
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| 170 | Draw the structure of butanone molecule. |
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| 171 | How will you convert Toluene to Benzaldehyde? | 12 |
| 172 | 4- pentenoic acid when treated with ( I_{2} ) and ( N a H C O_{3} ) gives: A. 4,5 -diiodopentanoic acid B. 5 – idomethyl – dihydrofuran -2-one c. 5-iodo tetrahydropyran-2-one D. 4-pentenolyiodide |
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| 173 | lonic species are stabilised by the dispersal of charge, which of the following carboxylate ions is the most positive charge? A. O ( C H_{3}-C-bar{O} ) в. ( C l-C H_{2}-C-bar{O} ) c. O ( F-C H_{2}-C-bar{O} ) D. ( F-C H_{2}-C-bar{O} ) ( _{mathrm{F}} ) |
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| 174 | Which among the following is most reactive to give nucleophilic addition? A. ( F C H_{2} C H O ) в. ( C l C H_{2} C H O ) ( mathrm{c} cdot B r C H_{2} C H O ) D. ( I C H_{2} C H O ) |
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| 175 | Malonic acid and succinic acid are distinguish by: A. heating в. ( operatorname{NaH} mathrm{CO}_{3} ) c. both ( A ) and ( B ) D. None of these |
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| 176 | Acetic acid is a volatile acid than ( boldsymbol{H}_{2} boldsymbol{C O}_{3} ) A. less B. more c. equally D. can’t say |
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| 177 | Butyraldehyde are produced commercially by: A. hydroformylation B. hydroacetylation c. formylation D. acetylation |
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| 178 | Which of the following reactions is/are not correct to get cinnamic acid? A ( cdot C_{6} H_{5} C H O frac{ }{left(C H_{3} C Oright)_{2} O / C H_{3} C O O N a} ) B. ( C_{6} H_{5} C H O frac{1) C H_{2}left(C O O C_{2} H_{2}right)_{2}, p y r i text { dine }}{2 / H_{3} O+, Delta} ) c. ( C_{6} H_{5} ) СНО ( stackrel{text {СНз} text {сно} / text {ОН}}{text { – }} ) D. ( C_{6} H_{5} C H O frac{1) B r C H_{2} C O O C_{2} H_{3} / Z n I Delta}{2) H_{2} O / H+/ Delta} ) |
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| 179 | The major product in the following reaction is: ( mathbf{A} ) B. c. D. |
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| 180 | The given reaction is called: [ mathbf{R}-mathbf{C}^{-} mathbf{R} frac{mathbf{N}_{3} mathbf{H}}{mathbf{U}}-mathbf{R} mathbf{C O N H R}+mathbf{N}_{mathbf{2} mathbf{S O}_{mathbf{4}}}^{mathbf{J}} ] A. Claisen-Schmidt reaction B. Kolbe-Schmidt reaction C. Schmidt reaction D. Kolbe’s reaction |
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| 181 | The product ( (B): ) ( A ) B. ( c ) D. |
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| 182 | Compound ‘P’ of the following reaction sequence can be : ( langle 0rangle-c equiv c-sqrt{0} ) B. ( langle Orangle-mathrm{cH}_{2}-mathrm{c} equiv mathrm{CH} ) ( c ) ( langle Orangle-c equiv c H ) ( D ) ( langle Orangle-c=c H_{2} ) |
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| 183 | Compound which is used for separation of acetone and acetophenone: A. Sodium bisulphite. B. Girgnard reagent. c. Sodium sulphate D. Ammonium chloride |
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| 184 | 0 0 0 0 |
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| 185 | prefix for side chain attached to the parent chain lring is correct? ( A ) Prefix: Ethanoyloxy B. Prefix: Methoxycarbony ( c ) Prefix: cyano ( D ) Prefix: Carbamoy |
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| 186 | Name the following compound according to the IUPAC system or nomenclature: ( boldsymbol{C H}_{3} boldsymbol{C H}left(boldsymbol{C H}_{3}right) boldsymbol{C H}_{2} boldsymbol{C}left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C O C H}_{3} ) |
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| 187 | ( frac{8}{8} ) | 12 |
| 188 | How many alkyne/ alkynes gives following ketone as the only product on hydrolysis by sulphuric acid, water and ( boldsymbol{H} boldsymbol{g} boldsymbol{S} boldsymbol{O}_{4} ? ) 4 B. 2 ( c ) ( D ) |
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| 189 | The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is : A. Benzoic acid B. Salicylaldehyde c. Salicylic acid D. Phthalic acid |
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| 190 | mich of the following decarboxylation reaction and their product is/are incorrectly matched? COOH NaOH/CaO НООС -COOH COOH COOH |
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| 191 | Which of the following is/are responsible for the higher boiling points of aldehydes and ketones compared to ethers and hydrocarbons of comparable molecular mass? A. Intermolecular dipole-dipole interactions between opposite ends of ( C=O ) dipoles B. Intermolecular hydrogen bonds c. Dipole induced dipole interactions. D. All of these |
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| 192 | Question 23. What is the difference between saccharin and saccharic acid? CO COOH |
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| 193 | The reduction of benzoyl chloride with ( P d ) and ( B a S O_{4} / C a S O_{3} ) produces : A. benzyl chloride B. benzoic acid c. benzaldehyde D. All of the above |
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| 194 | Cynohydrin of which of the following compound can give lactic acid A. ( H C H O ) в. ( C H_{3} C O C H_{3} ) c. ( C H_{3} C H O ) D. ( C H_{3} C H_{2} C H O ) |
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| 195 | Which of the following represents the correct order of the acidity in the given compound? ( mathbf{A} cdot C l C H_{2} C O O H<B r C H_{2} C O O H<C H_{3} C O O H< ) ( F C H_{2} C O O H ) B. ( C H_{3} C O O H<B r C H_{2} C O O H<C l C H_{2} C O O H< ) ( F C H 2 C O O H ) ( mathrm{c} cdot F C H_{2} C O O H<C l C H_{2} C O O H<B r C H_{2} C O O H< ) ( C H_{3} C O O H ) D. ( C H_{3} C O O H<F C H_{2} C O O H<C l C H_{2} C O O H< ) ( B r C H_{2} C O O H ) |
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| 196 | The product as a result of reaction of ( boldsymbol{C H}_{3} boldsymbol{M g I} ) with ( boldsymbol{C O}_{2} ) on further hydrolysis gives: A ( cdot C H_{3} C O O H ) в. ( H C O O H ) ( mathbf{c} cdot C H_{3} O H ) D. ( C O O H-C O O H ) |
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| 197 | Complete the reactions with appropriate products. (i) ( C H_{3} C H O+N H_{2} O H rightarrow X ) (ii) ( boldsymbol{C H}_{2}=boldsymbol{C H}_{2}+boldsymbol{P d C l}_{2}+ ) ( boldsymbol{H}_{2} boldsymbol{O} stackrel{boldsymbol{C u C l}_{2}}{longrightarrow} boldsymbol{Y} ) (iii) ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{O H} frac{C r boldsymbol{O}_{3}-boldsymbol{H}_{2} boldsymbol{S O}_{4}}{boldsymbol{lambda}} boldsymbol{Z} ) A. ( X=C H_{3} C H=N O H, Y=C H_{3} C H O, Z= ) ( C H_{3} C H_{2} C H_{2} C O O H ) B. ( X=C H_{3} C H_{2} N H_{2}, Y=C H_{3} C H_{2} C H O, Z= ) ( C H_{3} C H_{2} C H_{2} C O O H ) c. ( X=C H_{3} C O N H_{2}, Y=H C H O, Z=C H_{3} C O C H_{3} ) |
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| 198 | In which of the following reactions new carbon-carbon bond is not formed? A. Cannizzaro reaction B. Wurtz reaction c. Aldol condensation D. Friedel-Crafts reaction |
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| 199 | Write the IUPAC name of the following: ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}=boldsymbol{C H}-stackrel{mathbb{1}}{boldsymbol{C}}-boldsymbol{H} ) |
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| 200 | Draw the structure of the following compound: 3-Bromo-4-phenylpentanoic acid |
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| 201 | ( C r_{2} O_{3} ) ( C_{7} H_{16} frac{F e_{2} O_{3}}{773 K} A frac{K M n O_{4} / H^{oplus}}{ } B ) 10 atm Then what is the incorrect statement? A. ( B ) will give effervescence with ( N a H C O_{3} ) B. ( A ) has degree of unsaturation equal to 4 c. ( B ) with slaked lime gives a symmetrical ketone D. None of these |
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| 202 | The IUPAC name of the compound is: A. 3 -keto- 2 -methylhex- 5 -en-al B. 3-keto-2-methylhex-4-en-al C. 5 -formylhex- 2 -en-3-one D. 5-methyl-4-oxohex-2-en-5-al |
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| 203 | The correct IUPAC name of the compound ( boldsymbol{H} boldsymbol{O O C}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}- ) COOH is: A. Butanedioic acid B. Ethane-1,2-dicarboxylic acid c. succinic acid D. 1,2-Ethane dioic acid |
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| 204 | Which of the following cannot be used as reagent (B) ? A ( cdot C H_{3} O ominus ) at high temperature B. ( C_{2} H_{5} O^{ominus} ) at high temperature ( c ) at high temperature D. ( C s O H+C_{2} H_{5} O H ) |
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| 205 | Question 5. Compound ‘A’ was prepared by oxidation of compound ‘B’ with alkaline KMnO. Compound ‘A’ on reduction with lithium aluminium hydride gets converted back to compound ‘B’. When compound ‘A’ is heated with compound B in the presence of H2SO4, it produces fruity smell of compound C to which family the compounds ‘A’, ‘B’ and ‘C” belong top |
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| 206 | Structure containing a ketone group is: A ( cdot C H_{3}-C H_{2}-C H_{3} ) в. ( C H_{3}-C-O H ) ॥ О c. ( C H_{3}-O-C_{3} H_{7} ) D. ( C H_{3}-C-C H_{3} ) I O E ( cdot C H_{3}-C H_{2}-N H_{2} ) |
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| 207 | ( boldsymbol{R}^{prime} ) is : A. sulphanilamide B. ( p ) -bromo sulphanilamide c. ( o ) -bromo sulphanilic acid D. sulphanilic acid |
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| 208 | ( 0 % ) 000 ( sigma_{i}^{i-alpha} ) ( @^{i 0} ) |
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| 209 | Nucleophilic addition reaction will be most favoured in: A ( cdot C H_{3}-C H_{2}-C H_{2} C-C H_{3} ) В ( cdotleft(C H_{3}right)_{2} C=O ) c. ( C H_{3} C H_{2} C H O ) D. ( C H_{3} C H O ) |
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| 210 | An aldehyde as well as a ketone can be represented by the same molecular formula, say ( C_{3} H_{6} O . ) Write their structures and name them, State the relation between the two in the language of science. |
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| 211 | The triglycerides of which of the following unsaturated fatty acids are not present in oils and fats? A. Oleic acid B. Linoleic acid C. Linolenic acid D. Maleic acid |
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| 212 | Which among the following carbonyl compound is most polar? B. ( c ) D. |
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| 213 | The carbonyl carbon is: A. electrophilic B. nucleophilic C . amphoteric D. lewis base |
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| 214 | What is the action of ammonia ( left[N H_{3}right. ) on benzoic acid? Write equation. |
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| 215 | The ( p K_{a} ) values of four carboxylic acids are given below. Identify the weakest carboxylic acid. A . 4.89 B. 1.28 c. 4.76 D. 2.56 |
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| 216 | In cold region during winter freezes at room temperature itself and looks ice. A. Palmitic acid B. Linoleic acid c. Oleic acid D. Ethanoic acid |
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| 217 | The IUPAC name of the following compound is ( 3-(text { trichloromethyl }) ) benzoic acid. A. True B. False |
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| 218 | Q. 19 Why is there a large difference in the boiling points of butanal and butan-1-ol? LI |
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| 219 | Acid chlorides can be changed to aldehydes by reaction with: ( mathbf{A} cdot L i A l H_{4} ) B. ( N a B H_{4} ) C . Hydrogen and palladised ( B a S O_{4} ) D. zinc amalgam and conc. ( H C l ) |
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| 220 | Assertion Reduciton potential value of ( left(boldsymbol{E}^{circ}right) ) of ( mathbf{0} ) benzoquine (I) is greater than pbezoquinone (II) Reason Two adjacent (C=0) groups in (I) destablise (I) relative to (II). o-benzoquinone p-benzoquinone ( (mathrm{I}) ) A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
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| 221 | What are the suitable reagent for following conversion ( mathbf{A} cdot B r_{2} / F e B r_{3}, K M n O_{4}, H N O_{3} / H_{2} S O_{4} ) B. ( K M n O_{4}, B r_{2} / F e B r_{3}, H N O_{3} ) ( mathbf{c} cdot H N O_{3}, B r_{2} / F e B r_{3}, K M n O_{4} ) D. ( H N O_{3}, K M n O_{4}, B r_{2} / F e B r_{3} ) |
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| 222 | Olefin, which gives ( C H_{3} C H O ) and ( C H_{3} C H_{2} C H O ) on ozonization and hydrolysis is : A. 1butene B. 2butene c. 1pentene D. 2pentene |
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| 223 | -2 ( infty ) ( infty ) ( infty ) 00} |
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| 224 | 80 ( g_{i} ) 90 ( 90^{circ} ) ( int_{0}^{infty} ) |
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| 225 | Benzoyl chloride is prepared from benzoic acid by: A. ( C l_{2} ) and ( h v ) в. ( S O_{2} C l_{2} ) c. ( operatorname{sOCl}_{2} ) D. ( C l_{2} ) and ( H_{2} O ) |
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| 226 | Q. 30 Arrange the following in decreasing order of their acidic strength. Give explanation for the arrangement. C6H5COOH, FCH,COOH, NO CH2COOH |
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| 227 | toppr Q Type your question ( A ) and ( B ) ( c ) and ( D ) |
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| 228 | Q. 20 Write a test to differentiate between pentan-2-one and pentan-3-one. | 12 |
| 229 | How are the following conversions carried out? ( 2- ) methylbutan ( -1-01 ) into ( 2- ) methylbutanoic acid. |
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| 230 | a) i) How do you convert benzoic acid to benzamide? Write the reaction. ii) Complete the reaction : (please find above image) b) What happens when carbony compounds are treated with hydrazine? Write the reaction. |
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| 231 | Which carboxylic acid ( (B) ) (Equivalent weight ( left.=52 g m e q^{-1}right) ) loses ( C O_{2}, ) which on heating gives an acid ( (boldsymbol{C}) ) (Equivalent weight ( =mathbf{6 0} ) gm ( e q^{-1} ) )? A ( cdot R=C H_{3} ) [ begin{array}{l} C=C H_{3} C O O H \ N . E .(E w)=52 mathrm{gm} mathrm{eq}^{-1} end{array} ] В. ( R=C H_{3} ) [ C=C H_{3}-C H_{2}-C O O H ] [ text { N.E. }(E w)=52 text { gm } e q^{-1} ] ( mathbf{c} cdot R=C H_{3} ) [ begin{array}{l} C=C O O H \ N cdot E cdot(E w)=52 mathrm{gm} mathrm{eq}^{-1} end{array} ] D. None of these |
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| 232 | The IUPAC name of ( N C-C H_{2}- ) ( boldsymbol{C H}_{2}-boldsymbol{C O O H} ) is: A. 3 – carboxy propanenitrile B. 4- cyanobutanoic acid c. 2 – cyanomethane Carboxylic acid D. 3- cyanopropanoic acid |
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| 233 | The reactant which is not used in preparation of benzaldehyde in Etard method is: This question has multiple correct options A. toluene B. ethylbenzene c. benzoyl chloride D. sodium benzoate |
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| 234 | Zn(Hg)/HCI Y to HÓ In the above reaction, product (B) is -OH |
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| 235 | Write the IUPAC name of following compound |
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| 236 | ( x ) 4 ser ( x^{2} ) and |
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| 237 | of the following compounds will give butanone on oxidation with alkaline KMnO solution? (a) Butan-1-ol (b) Butan-2-ol (c) Both (a) and (b) (d) None of these ne (6) Rutes |
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| 238 | Acetic acid is obtained when: A. methyl alcohol is oxidised with potassium permanganate B. calcium acetate is distilled in the presence of calcium formate C . acetaldehyde is oxidised with potassium dichromate and sulphuric acid D. glycerol is heated with sulphuric acid |
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| 239 | Mention the hybridised state of carbonyl carbon atom. |
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| 240 | Chlorination of toulene in the presence of light and heat followed by the treatment with aqueous ( N a O H ) gives: A. o-cresol B. p-Cresol c. 2,4 -Dihydroxy toulene D. Benzoic acid |
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| 241 | Identify the products. [ underset{mathrm{Me}}{longrightarrow} underbrace{Gamma=mathrm{O}+2 mathrm{Me}-equiv-mathrm{H} frac{mathrm{M}_{mathrm{CO}}}{_{mathrm{MCOH}}}^{+}}_{(mathrm{B})}(mathrm{C}) ] |
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| 242 | Write chemical equations for the following conversions: (i) Nitrobenzene to benzoic acid. (ii) Benzyl chloride to 2 phenylethanamine. (iii) Aniline to benzyl alcohol. |
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| 243 | Aspirin is known as: A. Acetyl salicylic acid B. Phenyl salicylate C . Acetyl salicylate D. Methyl salicylic acid |
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| 244 | Question 6. Arrange the following in decreasing order of their acidic strength. Give explanation for the arrangement. CH3COOH, FCH2COOH, NO,CH,COOH |
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| 245 | 0.13 Which of the following compounds do not undergo aldol condensation: 05912 120 (a) CH–CHO (b) ( )–CHO – (C) CH3–C–CH, Siamois nodig om CH₂ – (d) CH, C-CHO ONG Сң, OT |
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| 246 | Which of the following is a true statement about aromatic aldehydes and ketones? A. They are insoluble in water B. They are water soluble c. They are insoluble in organic solvents. D. None of these |
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| 247 | Predict which of the following compounds will have a lower boiling point than 1-butanal A. 1-butanol B. 2-butanol c. butanoic acid D. 1-butene |
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| 248 | The decreasing order of acidic character of the following is: (I) EtOH (II) Me- ( mathrm{COOH} ) (III) ( M e O O C- ) ( boldsymbol{C H}_{2}-boldsymbol{C O O M e}(mathrm{IV}) mathrm{MeCOMe} ) B. ( |>|>>1>1 v ) c. ।>IV> |||> || |
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| 249 | Compound (A) will be: condensation ( mathbf{A} cdot P h-C equiv C-C equiv C-C H O ) B ( . P h-C equiv C-C H=C H-C H O ) ( mathbf{c} cdot P h-C H=C H-C equiv C-C H O ) ( mathbf{D} cdot P h-C H=C H-C=C H-C O_{2} H ) |
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| 250 | ( left.boldsymbol{R}-stackrel{boldsymbol{O}}{boldsymbol{C}}-boldsymbol{C l} frac{boldsymbol{N} boldsymbol{a} boldsymbol{N}_{3}}{boldsymbol{c o n c .} boldsymbol{H}_{2} boldsymbol{S O}_{4}}rightrangle_{boldsymbol{C H}_{3}-boldsymbol{C l}(mathbf{1} text { eqv } boldsymbol{t} .)} ) ( boldsymbol{P} quad ) Hence, Product ( (boldsymbol{P}) ) is: (Major product) ( mathbf{A} cdot R-N H_{2} ) ( mathbf{B} cdot R-N H-C H_{3} ) C. [ R-C-N H-C H_{3} ] D. [ R-N H-C-C H_{3} ] |
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| 251 | Which of the following sequences is correct? ( mathbf{A} cdot p K_{a}left(p-O_{2} N C_{6} H_{4} C O O Hright)>p K_{a} ) [ left(C_{6} H_{5} C O O Hright)>p K_{a}left(p-H O C_{6} H_{4} C O O Hright) ] B ( cdot p K_{a}left(p-O_{2} N C_{6} H_{4} C O O Hright)<p K_{a} ) [ left(C_{6} H_{5} C O O Hright) p K_{a} ) p K_{a}left(p-H O C_{6} H_{4} C O O Hright) |
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| 252 | The name of the compound is cyclohexylidene methanone. A . True B. False |
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| 253 | Assertion Hydrolysis of ethyl acetate in the presence of acid is a reaction of first order whereas in presence of alkali, it is reaction of second order. Reason Acid only acts as a catalyst whereas alkali acts as one of the reactants. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is correct but Reason is incorrect D. Assertion is incorrect but Reason is correct |
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| 254 | ( frac{d x}{d} ) ( d_{j}^{d} ) |
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| 255 | Write the structural formulae for the compounds that yield the following products on reductive ozonolysis: penta-3-one + glyoxal + propanal |
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| 256 | How do you bring about the following conversion? Acetylene to Oxalic acid |
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| 257 | Draw the structure of the following compound: p-Methylbenzaldehyde |
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| 258 | In the Rosenmund reduction, the catalyst used is : ( mathbf{A} cdot P d / B a S O_{4} ) B. Raney ( N i ) ( mathbf{c} cdot S n / H C l ) D. ( Z n / H C l ) |
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| 259 | Tollen’s reagent is: A. ammoniacal cuprous chloride B. ammoniacal cuprous oxide C. ammoniacal silver nitrate D. ammoniacal silver chloride |
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| 260 | Identify the product obtained when following acid prolonged heating |
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| 261 | Select the correct option: This question has multiple correct options A. carbonic acid is weaker acid than acetic acid B. the boiling points of acids are higher than corresponding alcohols C. chloroacetic acid is stronger acid than acetic acid D. phenol is more acidic than ethanol |
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| 262 | Q.16 Through which of the following reactions number of carbon atoms can be increased in the chain? (a) Grignard reaction (b) Cannizzaro’s reaction (c) Aldol condensation (d) HVZ reaction |
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| 263 | When acetone in treated with sodium bisulphite, the compound formed is : ( A ) [ mathrm{CH}_{3}-underset{mathrm{SO}_{3}^{prime} mathrm{Na}}{mathrm{C}}^{mathrm{OH}}-mathrm{CH}_{3} ] в. [ mathrm{CH}_{3}-begin{array}{c} text { он } \ mathrm{C} \ mathrm{s} 0_{3}^{prime} mathrm{Na} end{array}-mathrm{H} ] ( c ) [ mathrm{CH}_{3}-stackrel{mathrm{O}_{3}^{mathrm{Na}}}{mathrm{C}}-mathrm{CH}_{3} ] D. [ mathrm{CH}_{3}-stackrel{mathrm{O}_{3}}{mathrm{C}}-mathrm{H} ] |
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| 264 | What is the correct IUPAC name of HOOC ( -boldsymbol{C H}_{2}- ) COOH |
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| 265 | ( boldsymbol{P h}-underset{boldsymbol{O} boldsymbol{H}}{boldsymbol{C} boldsymbol{H}}-stackrel{boldsymbol{O}}{boldsymbol{C}}-boldsymbol{O H} ) Correct IUPAC naming of given acid is: A. 1-hydroxy-1-phenylethanoic acid B. 2-hydroxy-2-phenylethanoic acid c. 2-phenyl hydroxy ethanoic acid D. none of these |
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| 266 | Question 7. Identify the compounds A, B and C in the following reaction. CH3-Br – Mg/ether14 (1) CO2181 CH2OH/H+ (ii) Water AC |
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| 267 | Which of the following statements is not true for acetaldehyde? A. It will undergo an aldol condensation reaction. B. It will undergo a Cannizzaro reaction. C. It wit undergo a haloform reaction D. Enolisation is catalysed by acid or base. |
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| 268 | The IUPAC name of ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}left(boldsymbol{C H}_{3}right) boldsymbol{C H}(boldsymbol{C H O}) boldsymbol{C H}_{2} boldsymbol{C} ) is: A. 2-sec-butylbutanal B. 2,3-diethylbutanal c. 2-Ethyl-3-methyl-pentanal D. 3-methyl-2-ethylpentanal |
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| 269 | The final product obtained when toluene is subjected to side chain chlorination followed by hydrolysis at 373 K is A. phenol B. benzaldehyde c. acetophenone D. chlorobenzene |
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| 270 | How will you prepare the following compounds from benzene? You may use any inorganic reagent and any organic reagent having not more than one carbon atom: (i) Methyl benzoate (ii) ( m ) Nitrobenzoic acid (iii) p-Nitrobenzoic acid Phenylacetic acid (v) p-Nitrobenzaldehyde. |
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| 271 | What is the best way to carry out the following transformation? ( 1- )pentyne( longrightarrow ) pentanal A. ( H g S O_{4} / H_{2} S O_{4} ) B. ( H_{2} / )Lindlar’s catalyst; ( O_{3} ; Z n . H_{2} O ) c. ( H I O_{4} / H_{2} O ) D. ( B H_{3} ; H_{2} O_{2} / N a O H ) |
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| 272 | IUPAC name of hydroxybutyraldehyde is A. 1-hydroxybutanal B. 2-hydroxybutanol c. 2-Hydroxybutanal D. 2-hydroxybutyraldehyde |
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| 273 | Catalytic poison in Rosenmund’s reduction is : A. quinoline в. ( H_{2} ) c. ( C H_{3} ) COCl D. ( C H_{3} C H O ) |
12 |
| 274 | The major product obtained in the reaction is : ( A ) в. ( c ) ( D ) |
12 |
| 275 | Type your question ( A ) ( B ) ( c ) ( boldsymbol{beta}- ) lactone ( D ) |
12 |
| 276 | Which of the above compounds would be expected to decarboxylate when heated? ( A ) B. I c. ॥॥ D. IV |
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| 277 | ( frac{5}{6} ) ( frac{6}{8} ) in |
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| 278 | One of the following named reaction is an example of disproportionation reaction. Identify it A. Birch reduction B. Aldol condensation c. Reimer-Tiemann reaction D. Cannizaro reaction |
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| 279 | Formalin is used in the preparation of: A. bakelite B. nylon c. styrene D. teflon |
12 |
| 280 | Which is the most acidic site? | 12 |
| 281 | Which of the following aldehyde is a gas at room temperature? A. Methanal B. Ethanal c. Propanal D. Butanal |
12 |
| 282 | Which of the following acids does not contain – COOH group? A. Carbamic acid B. Barbituric acid c. Lactic acid D. succinic acid |
12 |
| 283 | Which of the following is true statement? A. The lower aldehydes have pungent ordour, but as molecular mass increases odour becomes less pungent and more fragrant. B. The lower aldehydes have fragrant ordour, but as molecular mass increases odour becomes less fragrant and more pungent. C. The lower aldehydes have pungent ordour, but as molecular mass increases odour disappears. D. The lower aldehydes have fragrant ordour, but as molecular mass increases odour disappears. |
12 |
| 284 | The correct order of increasing acidic strength of the following acids is: ( A cdot|<1|<| ) c. ॥ा < ॥ । D. II<IIIS |
12 |
| 285 | The major products obtained during ozonolysis of ( 2,3- ) dimethyl -1 butene and subsequent reductions with ( Z n ) and ( H_{2} O ) are : A. Methanoic acid and ( 2- ) methyl -2 – butanone B. Methanal and ( 3- ) methyl -2 – butanone C. Methanol and ( 2,2- ) dimethyl -3 – butanone D. Methanoic acid and ( 2- ) methyl -3 – butanone |
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| 286 | Formaldehyde is a liquid at room temperature. A. True B. False |
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| 287 | The reagent which does not give acid chloride on treating with a carboxylic acid is: A ( . P C l_{5} ) в. ( C l_{2} ) c. ( operatorname{socl}_{2} ) D. ( P C l_{3} ) |
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| 288 | An organic compound (A) (molecular formula ( C_{8} H_{16} O_{2} ) ) was hydrolysed with dilute sulphuric acid to give a carboxylic acid (B) and an alcohol (C). Oxidationof (C) with chromic acid produced (B). (C) on dehydration gives but-1-ene.Write equations for the reactions involved. |
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| 289 | Question 10. An aromatic compound ‘A’ (molecular formula C.H. gives positive 2,4-DNP test. It gives a yellow precipitate of compound on treatment with iodine and sodium hydroxide solution. Compound does not give Tollen’s or Fehling’s test. On drastic oxidation with potassium permanganate it forms a carboxylic acid ‘C’ (molecular formula C,H,02), which is also formed along with the yellow compound in the above reaction. Identify A, B and C and write all the reactions involved. |
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| 290 | Which acid is used as table vinegar? A. Formic acid B. Acetic acid c. Picric acid D. None of these |
12 |
| 291 | The suffix used for naming an aldehyde is: A . -ol B. -al c. – -one D. -ene |
12 |
| 292 | toppr ( t ) Q Type your question. ( A ) ( B ) ( c ) D. |
12 |
| 293 | ( p^{delta} ) ( x ) ( x ) ( s ) |
12 |
| 294 | Prepare carbolic acid from benzene sulphonic acid. Write a chemical equation for the action of neutral ferric chloride on phenol. |
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| 295 | In electrophilic aromatic substitution reaction, the nitro group is meta directing because it: A. Decreases electron density at meta position B. Increases electron density at meta position c. Increases electron density at ortho and para positions D. Decreases electron density at ortho and para positions |
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| 296 | Decarboxylation of salts of carboxylic acids is carried out in presence of alcoholic KOH. A. True B. False |
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| 297 | Which one of the following acids undergoes decarboxylation on strong heating: This question has multiple correct options A. Adipic acid B. 3 – butenoic acid c. Formic acid D. Salicylic acid |
12 |
| 298 | What is the structure of ( boldsymbol{E} ) ? | 12 |
| 299 | Identify ( (X),(Y) ) and ( (Z) ) in the given reaction. ( boldsymbol{X}+boldsymbol{Y} stackrel{Z}{longrightarrow} boldsymbol{C} boldsymbol{H}_{3}-stackrel{boldsymbol{C} boldsymbol{H}}{boldsymbol{3}-boldsymbol{H} boldsymbol{y} d r o x y} boldsymbol{H}-boldsymbol{C} boldsymbol{H}_{2}- ) ( C H O ) A ( cdot X=H C H O Y=C H_{3} C H O Z=K O H ) В . ( X=C H_{3} C H O Y=C H_{3} C H O Z=N a O H ) c. ( X=C H_{3} C H_{2} ) OH ( Y=H C H O Z=H_{2} S O_{4} ) D. ( X=C H_{3} C H_{2} C H O Y=H C H O Z= )Dryether |
12 |
| 300 | What is the IUPAC name for the following compound? A. 3-methylpentanoic acid B. isohexanoic acid c. ( beta ) -methylvaleric acid D. 2-methylpentanoic acid |
12 |
| 301 | When an acetyl chloride is heated with Na salt of a carboxylic acid, the product is an: A. ester B. anhydride c. alkene D. aldehyde |
12 |
| 302 | Name of functional group shown. A. Aldehyde B. Ketone C. Alcohol D. Carboxylic acid |
12 |
| 303 | Malonic ester contains an active methylene group and two hydrogen atoms of active methylene group which are easily replaced by alkyl and acyl groups in the presence of a strong base. The carbonation intermediate formed makes ( S_{N} 2 ) attack on alkyl or acyl groups. In the sequence of reactions given above, the final product ( [S] ) is : [ [mathrm{Q}] stackrel{mathbf{H}_{3} mathbf{O}^{+}}{longrightarrow}[mathbf{R}] stackrel{text { heat }}{longrightarrow}[mathrm{s}] ] ( mathbf{A} cdot C H_{2}=C H-C H_{2}-C H_{2}-C O-C O O H ) B ( cdot C H_{2}=C H-C H_{2}-C O-C H_{2}-C O O H ) c. ( C H_{2}=C H-C H_{2}-C H_{2}-C O O H ) D. ( C H_{3}-C H=C H-C H_{2}-C O O H ) |
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| 304 | How can the following conversation be brought about: Propanoic acid to ethylamine. |
12 |
| 305 | What is compound ( z: ) [ begin{array}{l} boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{B} boldsymbol{r} stackrel{boldsymbol{N a C} boldsymbol{N}}{longrightarrow} boldsymbol{X} stackrel{boldsymbol{H}_{3} boldsymbol{O}^{+}}{rightarrow} \ boldsymbol{Y} stackrel{boldsymbol{C H}_{3} C boldsymbol{H}_{2}}{longrightarrow} boldsymbol{O} boldsymbol{H}_{boldsymbol{H}^{+}} end{array} ] ( mathbf{A} ) [ begin{array}{c} mathbb{N} \ | \ mathrm{CH}_{3} mathrm{CH}=mathrm{CH} mathrm{COH} end{array} ] B. ( C H_{3} C H_{2} C H_{2} C H=N O C H_{2} C H_{3} ) ( mathbf{c} cdot C H_{3} C H_{2} C H_{2} C Hleft(O C H_{2} C H_{3}right)_{2} ) D. [ mathrm{CH}_{3} mathrm{CH}_{2} mathrm{CH}_{2} mathrm{COCH}_{2} mathrm{CH}_{3} ] |
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| 306 | Alkene ( (mathrm{X})left(C_{5} H_{1} 0right) ) on ozonolysis gives a mixture of two compounds ( (Y) ) and ( (Z) ) Compound (Y) gives positive Fehling’s test and iodoform test. Compound ( (z) ) does not give Fehling’s test but give iodoform test. Compounds ( (X),(Y) ) and (z) are? A ( cdot X=C_{6} H_{5} C O C H_{3}, Y=C H_{3} C H O, Z= ) ( C H_{3} C O C H_{3} ) B. ( X=C H_{3}-C H=underset{C H_{3}}{C}-C H_{3}, Y= ) ( C H_{3} C H O, Z=C H_{3} C O C H_{3} ) c. ( X=C H_{3} C H_{2} C H=C H_{2}, Y= ) ( C H_{3} C H_{2} C H O, Z=H C H O ) D. ( X=C H_{3}-C H=C H-C H_{3}, Y= ) ( C H_{3} C H O, Z=C H_{3} C H O ) |
12 |
| 307 | ( triangle-C O O H stackrel{H B r}{rightarrow} ? ) Which of the following is the major product? ( mathbf{A} cdot H_{3} C-C H_{2}-underset{B r}{C} H-C H_{3} ) в. ( B r-C H_{2}-C H_{2}-C H_{2} C O O H ) c. ( H_{3} C-C H-C H_{2}-B r ) Coot D. ( H_{3} C-C_{text {। }} H-C H_{2} ) COCH |
12 |
| 308 | Toluene ( frac{K M n O_{4} / K O H / H_{3} O oplus}{A .} ) What is A? A. Acetice acid B. Benzene C. Benzoic acid D. Benzaldehyde |
12 |
| 309 | In the above reaction sequence, the correct structures of ( mathrm{E}, mathrm{F} ) and ( mathrm{G} ) are : ( A ) ( B ) ( c ) ( D ) |
12 |
| 310 | The conversion of benzaldehyde into benzyl alcohol takes place by: A. Fittig reaction B. Wurtz -Fittig reaction c. wurtz reaction D. Cannizzaro’s reaction |
12 |
| 311 | Why are aldehydes and ketones polar compounds? |
12 |
| 312 | toppr Q Type your question The final product ( (C) ) of the above reaction is ( A ) 3 ( c ) ( D ) |
12 |
| 313 | G Q. 17 Benzophenone can be obtained by ………. (a) benzoyl chloride + benzene + AlCl3 Chloride + benzene + AICINDIN (b) benzoyl chloride + diphenyl cadmium (c) benzoyl chloride + phenyl magnesium chloride (d) benzene + carbon monoxide + ZnCl2 |
12 |
| 314 | Give the structural formulae and IUPAC names of the following compounds: (a) Formaldehyde (b) Acetone. |
12 |
| 315 | Column I ( organic compounds ( products of oxidised by ( H I O_{4} ) ) ( left.H I O_{4} text { oxidation }right) ) |
12 |
| 316 | The ( p K_{a} ) values of four carboxylic acids are 4.76,4.19,0.23 and 3.41 respectively. The ( p K_{a} ) value of strongest carboxylic acid among them is: A . 4.19 в. 3.41 c. 0.23 D. 4.76 |
12 |
| 317 | The product ( ^{prime} X^{prime} ) on oxidation with HIO gives: This question has multiple correct options |
12 |
| 318 | ( C H_{3} C H_{2} O H+O_{2} stackrel{X}{longrightarrow} ) Vinegar In the above reaction, ( boldsymbol{X} ) is: A ( cdotleft(C H_{3} C O Oright)_{2} M n ) в. ( C H_{3} ) СООН c. mycoderma aceti D. ( K_{2} C r_{2} O_{7} / H oplus ) |
12 |
| 319 | An organic compound ( boldsymbol{A}left(boldsymbol{C}_{mathbf{9}} boldsymbol{H}_{8} boldsymbol{O}_{3}right) ) does not react with an aqueous solution of ( N a H C O_{3} ) and does not change the color of litmus paper. A on acid hydrolysis gives ( Bleft(C_{9} H_{8} O_{4}right) ) whereas ( A ) on treatment with methanol in acid medium gives ( Cleft(C_{10} H_{14} O_{4}right) ) as the major alcoholysis product. B on heating with excess of soda-lime produces toluene. Deduce structures of ( A ) to ( C ) |
12 |
| 320 | reactions. The products ( (A) ) and ( (B)(B) ) are: ( A ) ( B ) ( mathbf{N O H} ) and ( c ) NOH and D. ( mathbf{N O H} ) and |
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| 321 | ( C a C_{2} stackrel{H_{2} O}{N H_{4} C l} frac{C u_{2} C l_{2}}{(2) M g / text { ether }} B frac{(1) 1 text { eqv. } H C l}{(3) C O_{2} / H_{2} O / H^{+}} C ) In above reaction product ( (C) ) is? ( mathbf{A} cdot C H_{2}=C H-C O O H ) ( mathbf{B} cdot H C equiv C-C O O H ) c. ( H O O C-C equiv C-C O O H ) ( mathbf{D} cdot C H_{2}=C H-underset{cot }{C}=C H_{2} ) |
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| 322 | ( frac{(mathbf{1}) boldsymbol{H} boldsymbol{C I}}{(mathbf{2}) boldsymbol{C H}_{2} boldsymbol{O} boldsymbol{H}} times frac{(mathbf{1}) boldsymbol{L} boldsymbol{i} A boldsymbol{I} boldsymbol{H}_{4} / boldsymbol{E} boldsymbol{t}_{2} boldsymbol{O}}{(mathbf{2}) boldsymbol{H}_{2} boldsymbol{O}} boldsymbol{Y} stackrel{boldsymbol{H}_{O}^{+}}{longrightarrow} boldsymbol{Z} ) ldentify ( X, Y ) and ( Z ) (according to the image shown, the correct ans is) |
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| 323 | The compound ( 2- ) methy -2 butene on reaction with ( N a I O_{4} ) in the presence of ( K M n O_{4} ) gives: ( mathbf{A} cdot C H_{3} C O O H ) B . ( C H_{3} C O C H_{3}+C H_{3} C O O H ) ( mathbf{c} cdot C H_{3} C O C H_{3}+C H_{3} C H O ) ( mathrm{D} cdot mathrm{CH}_{3} mathrm{CHO}+mathrm{CO}_{2} ) |
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| 324 | dentify ( A, B ) and ( C ) in following reactions. |
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| 325 | ( d ) ( d ) ( d ) ( d ) |
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| 326 | The IUPAC name of ( boldsymbol{C H}_{3}-boldsymbol{C H}= ) ( boldsymbol{C H}-boldsymbol{C O O H} ) is: A. but-2-ene-1-oic acid B. but-1-ene-1-oic acid c. but-2-ene-1-carboxylic acid D. propene-1-carboxylic acid |
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| 327 | 2-methyl-1,3-cyclohexanedione is more acidic than cyclohexanone A. True B. False |
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| 328 | Draw the structure of the simplest ketone. |
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| 329 | Which of the following is used for preserving biological specimens? A. Formaldehyde B. Ether c. Ethyl alcohol D. None of these |
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| 330 | Give the products formed on reductive ozonolysis with LAH and oxidative ozonolysis with ( boldsymbol{H}_{2} boldsymbol{O}_{2}, ) from the compounds. A. Propan-1,3-diol and propan-1,3-dioic acid B. Propan-1,2-diol and propan-1,3-dioic acid C. Propan-1,3-diol and propan-1,2-dioic acid D. Propan-1,2-diol and propan-1,2-dioic acid |
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| 331 | 104. A hydrocarbon of formula CH,, on ozonolysis gives only one carbonyl product which does not reduce Fehling’s solution. The hydrocarbon is (a) 2-Hexene 03 (b) 2,3-Dimethyl-2-butene (C) 2-Methyl-2-pentene (d) 3-Hexene |
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| 332 | Which of the following is not a use of benzoic acid? A. Food preservative B. Anticeptic c. In manufacture of dye D. In metal polish |
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| 333 | Assertion If a pure enantiomer of the following ester is hydrolysed in dilute alkaline medium, a pure enantiomer of alcohol is obtained. Reason Under the given condition of hydrolysis, acyl oxygen heterolysis always takes place. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is correct but Reason is incorrect D. Assertion is incorrect but Reason is correct |
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| 334 | What is the functional groups in the following molecules? ( boldsymbol{C H}_{3} boldsymbol{C O O H} ) |
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| 335 | Decarboxylation of malonic acid gives: A ( . C H_{4} ) в. ( C H_{3} ) СООН c. both (a) and (b) D. none of the above |
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| 336 | Carboxylic acids may be prepared by the reaction of Grignard reagents with: A. ( C O_{2} ) в. ( C O ) c. Formaldehyde D. Formic acid |
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| 337 | Identify ( A, B, ) and ( C ) i) Isomeric alcohols ( (A),(B), ) and ( (C) ) ( left(boldsymbol{C}_{5} boldsymbol{H}_{12} boldsymbol{O}right) ) ii) ( (A) ) and (B) react with chromic acid solution. (B) gives an acid (D). iii) Reactivity with HBr is: ( C>A gg B ) All give the same compound, ( boldsymbol{C}_{5} boldsymbol{H}_{11} boldsymbol{B} boldsymbol{r}(boldsymbol{E}) ) iv) Only (A) is oxidised by NaOI. |
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| 338 | The IUPAC name of the following compound is ethyl 4 – acetylbenzoate. A. True B. False |
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| 339 | The incorrect statement(s) about the following two compound ( I ) and ( I I ) is/are: This question has multiple correct options |
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| 340 | Identify the combination of compounds that undergo aldol condensation followed by dehydration to produce but ( -2- ) enal A. methanal and ethanal B. two moles of ethanal c. methanal and propanone D. Ethanal and propanone E. two moles of ethanol |
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| 341 | Among the following compounds which will react with acetone to give a product containing ( >boldsymbol{C}=boldsymbol{N}-? ) A. ( C_{6} H_{5} N H C O C l ) в. ( left(C H_{3}right)_{2} N-C H_{3} ) c. ( C_{6} H_{5} N H N H_{2} ) D. ( C_{6} H_{5} N H C_{6} H_{5} ) |
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| 342 | The IUPAC name of the compound is: A. 3- Methyl- 5 – heptanone B. 5-Methylheptan-3-one c. 5 – Ethyl – 5 – hexanone D. 2 – Ethyl – 4 – hexanone |
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| 343 | Among the given compounds, the compound which is most susceptible to a nucleophilic attack at the carbonyl group is: A ( cdot C H_{3} C O C l ) в. ( C H_{3} C H O ) ( mathbf{c} cdot C H_{3} C O O C H_{3} ) D. ( C H_{3} ) СООСОСН( _{3} ) |
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| 344 | Structure of propanone is: A ( cdot C H_{3}-C H_{2}-C H_{3} ) в. ( C H_{3}-C-O H ) ॥ О c. ( C H_{3}-O-C_{3} H_{7} ) D. ( C H_{3}-C-C H_{3} ) I O E ( cdot C H_{3}-C H_{2}-N H_{2} ) |
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| 345 | ( boldsymbol{H O O C}-boldsymbol{C H}_{2}-underset{1}{boldsymbol{C} boldsymbol{H}}-boldsymbol{C H}_{2}- ) ( boldsymbol{C O O H} ) COOH What is the IUPAC name of the given compound? A. Propane-1,2,3-tricarboxylic acid B. Propane -1,2,3 – trioic acid c. 1,2,3 – tricarboxylic propane D. Propanedioic carboxylic acid |
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| 346 | The acidity of the compounds ( boldsymbol{R} boldsymbol{C O O H}, boldsymbol{H}_{2} boldsymbol{C O}_{3}, boldsymbol{C}_{6} boldsymbol{H}_{5} boldsymbol{O H}, boldsymbol{R O H} ) decreases in the order: A ( cdot R C O O H>H_{2} C O_{3}>C_{6} H_{5} O H>R O H ) в. ( C_{6} H_{5} )ОН( > )RСООН( >H_{2} )СО( _{3}> )ВОН c. ( R O H>C_{6} H_{5} O H>R C O O H>H_{2} C O_{3} ) D. ( H_{2} C O_{3}>R C O O H>C_{6} H_{5} O H>R O H ) |
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| 347 | 10.23 Write IUPAC names of the following structures CHO Br CHO (0) CHO CHO CHO |
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| 348 | Identify ( boldsymbol{X} ) ( A ) в. ( c ) ( D ) |
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| 349 | Diols (I-IV) which react with ( C r O_{3} ) in aqueous ( H_{2} S O_{4} ) and yield products that readily under go dercarboxylation on heating, are: ( (mathrm{I}) ) A. I and ( J ) B. II and III c. ( I I ) and ( I V ) D. ( I ) and ( I V ) |
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| 350 | Identify the compound ( boldsymbol{A} ) ( mathbf{A} cdot C_{6} H_{5} O H ) B ( cdot C_{6} H_{5} C O C H_{3} ) ( mathbf{c} cdot C_{6} H_{5} C l ) ( mathbf{D} cdot C_{6} H_{5} C H O ) |
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| 351 | IUPAC name of ( left(boldsymbol{C H}_{3}right)_{3} boldsymbol{C}-boldsymbol{C H}= ) ( boldsymbol{C H}-boldsymbol{C H O} ) A. 4,4,4 -trimethyl but- – -en- -1-al B. 4, 4-Dimethylpent-2-enal c. 2, 2-dimethylpent-3- 3n-4-al D. 3-tert. butyl prop-2-en-1-al |
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| 352 | The structure of compound’X’ is: ( A ) [ mathrm{H}-underset{mathrm{O}}{mathrm{C}}-mathrm{O}-mathrm{C}_{2} mathrm{H}_{5} ] B. [ mathrm{CH}_{3}-mathrm{CH}-mathrm{CH}_{2}-mathrm{C}-mathrm{O}-mathrm{C}_{2} mathrm{H}_{5} ] ( c ) [ begin{array}{c} mathrm{CH}_{3}-mathrm{C}-mathrm{O}-mathrm{C}_{2} mathrm{H}_{5} \ | \ mathrm{O} end{array} ] ( D ) [ mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{O}-underset{mathrm{O}}{|}-mathrm{CH}_{2}-mathrm{C}_{2} mathrm{H}_{5} ] |
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| 353 | 8 8 8 8 |
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| 354 | ( frac{sigma}{partial x} ) 0 |
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| 355 | Assertion PhCOCOCOPh forms stable hydrate. Reason The compound in the hydrate from has intramolecular H-bonding. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is incorrect but Reason is correct D. Both Assertion and Reason are correct |
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| 356 | reaction? ( A ) ( B ) ( c ) ( D ) |
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| 357 | The solubility of water decreases rapidly with the increase in the size of groups attached to carbonyl group. A. alkyl B. aryl c. phenyl D. benzyl |
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| 358 | Aldehydes and ketones both undergo condensation with: A. ( N H_{2} O H ) в. ( operatorname{NaHSO}_{3} ) c. ( H C N ) D. ( R M g X ) |
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| 359 | A sample of acetaldehyde contained some ethyl alcohol as impurity. The reagent useful for the purification of ( boldsymbol{C H}_{3} boldsymbol{C H O} ) is : A. ( N a H C O_{3} ) B. ( N a_{2} C O_{3} ) ( mathbf{c} cdot operatorname{NaH} S O_{3} ) D. ( P C l_{5} ) |
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| 360 | The colour of ( C r_{2} O_{7}^{2-} ) changes from orange to blue-green when added to compound (A). The blue-green colour is due to the formation of : A ( cdot C r^{2} ) в. ( C r^{3} ) ( mathrm{c} cdot mathrm{Cr} mathrm{O}_{4}^{2} ) D. ( C r O_{5} ) |
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| 361 | Cyanohydrin of which of the following compound on hydrolysis gives optically active products? A. ( H C H O ) в. ( C H_{3} C H O ) c. ( C H_{3} ) COCH( _{3} ) D. all of the above |
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| 362 | ( M e C H O stackrel{N a O H, Delta}{longrightarrow} A stackrel{K O H, Delta}{longrightarrow} B ) B is: A ( cdot operatorname{Me}(C H=C H)_{3} C H O ) в. ( M e C H=C H C H O ) c. ( operatorname{Me}(C H=C H)_{2}-C H O ) ( D ) (4) ( mathrm{Me}+mathrm{CH}=mathrm{CH}=_{4} mathrm{CHO} ) |
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| 363 | Oxidation of cyclohexene in presence of acidic potassium permanganate leads to. A . Glutaric acid B. Adipic acid c. Pimelic acid D. succinic acid |
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| 364 | Q Type your question- gives acetone as one of the products. The structure of the compound is ( A ) ( B ) ( c ) ( D ) |
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| 365 | Which of the following IUPAC name will be used to name carboxylic acid functional group? A. -one B. -oic acid ( c .-a ) D. – -ane |
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| 366 | IUPAC name of valeric acid is: A. Propanoic acid B. Butanoic acid c. Ethanoic acid D. Pentanoic acid |
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| 367 | Given the best condition for this transformation: ( mathbf{A} cdot C H_{3} O H, H^{+}(mathrm{cat.}), ) heat B. ( H_{2} O, H_{+} ) (cat.), heat ( mathbf{c} cdot M g, ) ether ( , C H_{3} O H ) ( mathbf{D} cdot S O C l_{2}, C H_{3} O H ) |
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| 368 | ( left.left(C_{2} H_{5}right)right)_{2} C O frac{H_{3} O^{+}}{C H_{3} M g B r(e x c e s s)} A . A ) (alcohol) can also be obtained by: A ( cdot C H_{3} C H_{2} C H O frac{H_{3} O^{+}}{C H_{3} M g B r(2 m o l)} ) в. ( _{mathrm{II}}^{o} ) ( C H_{3} C O C_{2} H_{5} frac{C H_{3} M g B r(2 m o l)}{H_{3} O^{+}} ) c. ( quad_{mathrm{N}}^{o} mathrm{C}_{mathrm{H}_{3} mathrm{CCH}_{3}} frac{mathrm{CH}_{3} mathrm{MgBr}(1 mathrm{mol})}{mathrm{H}_{3} mathrm{O}^{+}} ) D. both ( B ) and ( C ) |
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| 369 | What is the product of the reaction? ( mathbf{A} ) ( B ) ( mathbf{C} ) ( D ) |
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| 370 | The number of ( s p^{2} ) hybridized carbon atoms in the given compound is: [ mathbf{H C} equiv mathbf{C}-mathbf{C H}_{2}-mathbf{U}-mathbf{C H}_{2}-mathbf{C H}=mathbf{C H}_{2} ] ( A cdot 3 ) B. 4 ( c cdot 5 ) ( D ) |
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| 371 | Which one of the following is an optically active compound? A. ( C H_{3} C H_{2} ) COOH в. ( C H_{3} C H(O H) C O O H ) с. НООС СН( _{2} ).СООН D. ( C H_{3} ) СО СООН |
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| 372 | ( boldsymbol{C}_{boldsymbol{6}} boldsymbol{H}_{boldsymbol{5}}left(boldsymbol{C} boldsymbol{H}_{2}right)_{boldsymbol{2}} boldsymbol{C} boldsymbol{d}+ ) ( boldsymbol{2} boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C o C l} stackrel{d r y}{operatorname{ether}} ) |
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| 373 | Write the product of this reaction? [ mathrm{C}_{6} mathrm{H}_{5}-mathrm{CH}-mathrm{CH}_{3} frac{mathrm{OH}}{mathrm{CCl}_{4}}> ] |
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| 374 | Stephen’s reduction is used to prepare aldehyde from : A. Alcohol B. Alkyl cyanide c. Alkanone D. Acid chloride |
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| 375 | Structure of ( A ) and the type of isomerism in the above reaction are respectively: ( boldsymbol{C H}_{3}-boldsymbol{C} equiv boldsymbol{C H} frac{40 % boldsymbol{H}_{2} boldsymbol{S O}_{4}}{1 % boldsymbol{H g S O}_{4}} ) ( boldsymbol{A} stackrel{text {Isomerisation}}{longrightarrow} boldsymbol{C H}_{3} boldsymbol{C O C H}_{3} ) A. prop-1-en-2-ol, metamerism B. prop-1-en-2-ol, tautomerism c. prop-z-en-2-ol, cis and trans isomerism D. prop-2-en-1-ol, tautomerism |
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| 376 | Above reaction is known as: [ begin{array}{c} mathrm{O} \ mathrm{H}-mathrm{C}-mathrm{D}-mathrm{H}^{28} mathrm{O}^{-} end{array} mathrm{H}-mathrm{N}^{-18} mathrm{O}^{-}+mathrm{CH}_{2} mathrm{D}-mathrm{OH} ] A. Cannizaro reaction, Disproportionation reaction B. Tischenko reaction, Disproportionation reaction C. Cross Cannizaro reaction, Redox reaction D. Tischenko reaction, Redox reaction |
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| 377 | Which product is formed when 3 methylpentane-1,3,4-triol is heated under reflux with an excess of acidified potassium dichromate(VI)? A ( cdot H O_{2} C C H_{2} Cleft(C H_{3}right)(O H) C O C H_{3} ) в. ( H O_{2} C C H_{2} C O C(O H)left(C H_{3}right)_{2} ) c. ( O H C C H_{2} Cleft(C H_{3}right)(O H) C O C H_{3} ) D. ( H O_{2} C C H_{2} C Oleft(C H_{3}right) C O C H_{3} ) |
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| 378 | Q. 12 In Clemmensen reduction, carbonyl compound is treated with (a) zinc amalgam + HCI (b) sodium amalgam + HCI (c) zinc amalgam + nitric acid (d) sodium amalgam + HNO, |
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| 379 | ( A ) compound ( C ) (molecular formula, ( left.C_{2} H_{4} O_{2}right) ) reacts with ( N a ) metal to form a compound ( boldsymbol{R} ) and evolves a gas which burns with a pop sound. Compound ( C ) on treatment with an alcohol ( A ) in presence of an acid forms a sweet smelling compound ( S ) (molecular formula, ( C_{3} H_{6} O_{2} ) ). On addition of NaOH to ( C, ) it also gives ( R ) and water. S on treatment with ( N a O H ) solution gives back ( boldsymbol{R} ) and ( boldsymbol{A} ) Identify ( boldsymbol{R} ) and ( boldsymbol{A} ) ? A . Compound ( R ) is ( C H_{3} C O O N a ) Compound ( A ) is ( C H_{3} O H ) B. Compound ( A ) is ( C H_{3} O H ) Compound ( R ) is ( C H_{3} C O O C H_{3} ) C. Compound ( A ) is ( C H_{3} C O O H ) compound ( R ) is ( C H_{3} C O O N a ) D. Compound ( A ) is ( C H_{3} C O O N a ) Compound ( R ) is ( C H_{3} O H ) |
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| 380 | Write IUPAC name and chemical formula of Acetone. |
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| 381 | is/are used in the manufacture of bakelite polymer. A. Propyl alcohol B. Phenol c. Formaldehyde D. both B and C |
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| 382 | Esterification of the acid ( (P) ) with the alcohol (Q) gives: A. only one enantiomer B. a mixture of diastereomer c. a mixture of enantiomer D. only one fraction on fractional distillation |
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| 383 | The compound (A) is: ( mathbf{A} ) B. ( mathbf{C} ) D. |
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| 384 | In the presence of manganese acetate, ethyne produces: A . acetic acid B. propanoic acid c. butanoic acid D. methanoic acid |
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| 385 | Answer the following questions: 1. Explain the mechanism of aldol addition reaction. 2. Mention two uses of carboxylic acids. |
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| 386 | The IUPAC name of the given compound is: A. 4 – pentanone B. pentanone – c. Pentan-2-one D. none of the above |
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| 387 | Arrange the following in increasing order of their acidic character: Benzoic acid, Phenol, Cresol |
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| 388 | In which of the following solvent/(s), aldehydes and ketones are soluble? A. Alcohol B. ether c. benzene D. All of the above |
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| 389 | Which part of – COOH group is involved in the reaction of acid with metals? A. C group B. only -OH group c. соон group D. all carboxylic group |
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| 390 | The secondary suffix, ‘-one’ indicates the following functional group in the compound. A. -coon в. c. D. – он |
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| 391 | IUPAC name of the following compound is : A. 6 -ethyl-1,4, 6-octanetrioic acid B. 5-Ethyl -hexane-1, 3, 6-tricarboxylic acid C. 3-ethyl-5-carboxyoctanedioic acid D. 4-carboxy-6-ethyloctanedioic acid |
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| 392 | In case of aldehydes and ketones there is the addition of nucleophile but in case of acyl compound, there is a nucleophilic substitution. A. True B. False |
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| 393 | The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits: A. geometrical isomerism B. optical isomerism c. neither optical nor geometrical isomerism D. both optical and geometrical isomerism |
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| 394 | Question 12. How can propan-2-one be converted into tert. butyl alcohol? |
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| 395 | How are the following compounds prepared? Benzaldehyde from benzene. |
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| 396 | Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents. (i) PhMgBr and then ( boldsymbol{H}_{3} boldsymbol{O}^{+} ) (ii) Tollens reagent (iii) Semicarbazide and weak acid (iv) Excess ethanol and acid (v) Zinc amalgam and dilute hydrochloric acid |
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| 397 | Assertion 2,4-Dimethyl hex-2-ene has 4 stereoisomer Reason It show geometrical isomerism A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
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| 398 | 115. Which of the following compounds was the starting material for the oxidation shown below? KMnO4/H OH OH + CO2 OH (a) |
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| 399 | Using grignard reagent ( boldsymbol{C}=boldsymbol{O}+boldsymbol{R}-boldsymbol{M} boldsymbol{g} boldsymbol{X} rightarrow ) | 12 |
| 400 | Which compound does not gives Cannizaro’s reaction: A. Acetaldehyde B. Benzaldehyde c. Formaldehyde D. None of the above |
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| 401 | The correct statement(s) about the following reaction sequence is(are): Cumene ( left(C_{9} H_{12}right) frac{i) O_{2}}{i i) H_{3} O^{+}} ) ( P frac{C H C l_{3} / N a O H}{ } Q(text { major })+ ) ( boldsymbol{R}(boldsymbol{m} boldsymbol{i n} boldsymbol{o r}) boldsymbol{Q} frac{boldsymbol{N a O H}}{boldsymbol{P h C H}_{2} boldsymbol{B r}} boldsymbol{S} ) This question has multiple correct options A. ( R ) is steam volatile B. Q gives dark violet coloration with ( 1 % ) aqueous ( F e C l_{3} ) solution c. ( operatorname{sgives} ) yellow precipitate with ( 2,4- ) dinitrophenylhydrazine D. s gives dark violet coloration with ( 1 % ) aqueous ( F e C l_{3} ) solution. |
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| 402 | Amongst the given, the total number of compounds suitable in aqueous NaOH are: ( A ) 3.2 ( c .3 ) ( D ) |
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| 403 | The condensation reaction between one equivalent of acetone and two equivalents of benzaldehyde in presence of dilute alkali leads to the formation of: A. Benzalacetophenone B. Benzylideneacetone c. Dibenzalacetone D. Benzoic acid and acetic acid E. Only benzoic acid |
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| 404 | Among the following, which is the strongest acid? A. ( C H F_{2}-C H_{2}-C H_{2}-C O O H ) в. ( C H_{3}-C H_{2}-C F_{2}- ) СООН c. ( C H_{2} F-C H F-C H_{2}-C O O H ) D. ( C H_{3}-C F_{2}-C H_{2}-C O O H ) |
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| 405 | Out of the following the one that undergoes reaction with ( 50 % ) NaOH solution to give corresponding alcohol and acid is: A. phenol B. benzaldehyde c. butanol D. benzoic acid |
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| 406 | ( a-(0)-_{i_{f, a}}^{i}(Omega)-a ) ( a-[0]_{i}^{i}(0)-a ) ( a-(0)-_{i}^{i}(0)-a ) ( a-(0)-underset{c c_{3}}{c_{0}}<0-c ) |
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| 407 | How many of the given compounds will react with ( N a H C O_{3} ? ) |
12 |
| 408 | The alkene ( C_{6} H_{10} ) producing OHC ( left(C H_{2}right)_{4} C H O ) on ozonolysis is: A. 1 -hexene B. 3-hexene c. cyclohexene D. 1-methylcyclohexene |
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| 409 | Which of the following substituted carboxylic acids has the highest ( boldsymbol{K}_{boldsymbol{a}} ) value? ( A ) в. ( c ) D. |
12 |
| 410 | COOH 120. 11 Li, Liq. NH3 , major product: COOH COOH CHOH be COOH (c) || (d) |
12 |
| 411 | Why do aldehydes and ketones have high dipole moments? |
12 |
| 412 | ( frac{d}{d} ) | 12 |
| 413 | The IUPAC name of ( boldsymbol{C H}_{3} boldsymbol{C O C H}left(boldsymbol{C H}_{3}right)_{2} ) is: A. 4-methylisopropyl ketone B. 3-Methyl-2-butanone c. Isopropylmethyl ketone D. 2-methyl-3-butanone |
12 |
| 414 | Which of the following is the functional group for carboxylic acids? ( A ) [ >C=0 ] B. ( c ) ( -mathrm{OH} ) ( D ) |
12 |
| 415 | ( j_{j}^{j} ) | 12 |
| 416 | The correct structural formula of butanoic acid is |
12 |
| 417 | How anisole reacts with bromine in ethanoic acid? Write the chemical equation for the reaction. |
12 |
| 418 | 0.24 Which of the carbon atoms present in the molecule given below are asymmetric? но , он но нон (с) 1,4 (а) 1, 2, 3, 4 (b) 2, 3 (d) 1, 2, 3 furgoncies with four |
12 |
| 419 | Ethanedioic acid has the formula ( H O_{2} C C O_{2} H . ) What is the formula of aluminium ethanedioate? A ( . A l C_{2} O_{4} ) в. ( A lleft(C_{2} O_{4}right)_{3} ) ( mathbf{c} cdot A l_{2} C_{2} O_{4} ) D. ( A l_{2}left(C_{2} O_{4}right)_{3} ) |
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| 420 | Assertion The acid hydrolysis of ester takes place more rapidly in ( D_{2} O ) than ( H_{2} O ) Reason ( D_{3} O^{+} ) is stronger acid than ( H_{3} O^{+} ) A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is correct but Reason is incorrect D. Assertion is incorrect but Reason is correct |
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| 421 | A compound ‘X’ gives brisk effervescence of ( C O_{2} ) on treatment with Na H ( C O_{3} ) and when treated with Li ( A l H_{4} ) gives ethyl alcohol. Therefore ‘X |
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| 422 | ( sigma ) ( sigma ) 0 |
12 |
| 423 | What is the action of acidified potassium dichromate on acetaldehyde? |
12 |
| 424 | Write IUPAC name of the compound above A. 2-Amino-4-hydroxybenzoic acid B. 6-Amino-4-hydroxybenzoic acid c. 3-Amino-4-carboxyphenol D. 2-Carboxy-5-hydroxyaniline |
12 |
| 425 | 2.27 Arrange the following in decreasing order of their acidic strength and give reason for your answer. CH3CH2OH, CH3COOH, CICH,COOH, FCH2COOH, CGH-CH2COOH Thinking Process |
12 |
| 426 | The correct order of acidic strength of carboxylic acid is: A. formic acid< benzoic acid< acetic acid B. formic acids acetic acid < benzoic acid C. acetic acid< formic acid< benzoic acid D. acetic acid< benzoic acid< formic acid |
12 |
| 427 | Rochelle salt is : A. sodium tartarate B. sodium potassium tartarate c. ammonium tartarate D. potassium ammonium tartarate |
12 |
| 428 | The acid strength of active methylene group in given compounds decreases as: (a) ( boldsymbol{C H}_{3} boldsymbol{C O C H}_{2} boldsymbol{C O O C}_{2} boldsymbol{H}_{5} ) (b) ( C H_{3} C O C H_{2} C O C H_{3} ) (c) ( C_{2} H_{5} O O C C H_{2} C O O C_{2} H_{5} ) ( mathbf{A} cdot a>b>c ) В . ( c>a>b ) ( mathbf{c} cdot a>c>b ) D. ( b>a>c ) |
12 |
| 429 | The IUPAC name of acetyl acetone is : A. pentane-2,5-dione B. pentane-2,4-dione c. hexane- 2,4 -dione D. butane-2,4-dione |
12 |
| 430 | The name of the compound is Cyclopropanecarboxylic acid. A. True B. False |
12 |
| 431 | Assertion Oxidation of glucose by ( B r_{2} ) water gives saccharic acid. Reason Bra water oxidized -CHO and alcohol. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
12 |
| 432 | Formalin is: A. ( 60 % ) solution of formaldehyde B. ( 40 % ) solution of formaldehyde C. ( 30 % ) solution of formaldehyde D. ( 50 % ) solution of formaldehyde |
12 |
| 433 | Which of the following reagents can reduce acetyl chloride to acetaldehyde? A ( cdot N a / C_{2} H_{5} O H ) в. LiАlH( _{4} ) c. ( H_{2} / N i ) D. ( H_{2} / P d-B a S O_{4} ) |
12 |
| 434 | Which of the following carbonyl compounds is most polar? A. ( C_{2} H_{5}-stackrel{I}{C}-C_{2} H_{5} ) B. ( quad o ) ( C H_{3}-C-C H_{3} ) c. [ C H_{3}-C-H ] D. [ H-C-H ] |
12 |
| 435 | uuluu man carboxylic acids. 2. 20 what product will be formed on reaction of propanal WI menylpropanal in the presence of NaOH? What products will be formed? Write the name of the reaction also. |
12 |
| 436 | Aldehydes and ketones are differentiated by using: ( mathbf{A} cdot N a O H / I_{2} ) B. ( N a H S O_{3} ) ( mathbf{c} cdot A g N O_{3} / N H_{4} O H ) D. ( N H_{2}-N H_{2} ) |
12 |
| 437 | ( boldsymbol{P} frac{boldsymbol{K} boldsymbol{M} boldsymbol{n} boldsymbol{O}_{4} / boldsymbol{K} boldsymbol{O} boldsymbol{H}}{longrightarrow} boldsymbol{Q} frac{text {Sodalime}}{Delta} boldsymbol{R} frac{boldsymbol{C H}_{3} boldsymbol{C l}}{boldsymbol{a n h y} cdot boldsymbol{A l} boldsymbol{C l}_{3}} boldsymbol{S} ) If ( P ) and ( S ) are toluene, ( Q ) and ( R ) and ( —– ) respectively. A. Benzaldehyde, Benzoic acid B. Benzaldehyde, Sodium benzoate C. Benzoic acid, Benzene D. Benzene, Benzoic acid |
12 |
| 438 | Which of the following is the best preparation of ( 2- ) methyl pentanoic acid? A ( cdot ) 2 – chloropentane ( stackrel{N a C N(a q)}{longrightarrow} stackrel{H^{+} / H_{2} O}{longrightarrow} ) B・ ( _{2-text { pentanone }} stackrel{N a C N(a q)}{longrightarrow} stackrel{H^{+} / H_{2} O}{longrightarrow} ) c. 2 – bromopentane ( frac{M g}{text {Ether}} ) (ii) (i) ( C O_{2} ) ( overline{H C I} ) H ( _{2} ) O D. ( 1- ) chloropentane ( stackrel{N a C N(a q)}{longrightarrow} stackrel{H^{+} / H_{2}}{longrightarrow} ) |
12 |
| 439 | Which of the following constitutes the best substrate during the acidic hydrolysis of amides? ( A ) в. ( c ) D. |
12 |
| 440 | The most direct malonic ester synthesis of the 3-phenyl propanoic acid would involve the use of : A. ( C_{6} H_{5} C H_{2} C H_{2} C H_{2} C l ) в. ( C_{6} H_{5} C H_{2} C H_{2} C l ) c. ( C_{6} H_{5} C H_{2} C l ) D. ( C l C H_{2} C O O H ) |
12 |
| 441 | The given compound is used as: A. antihistamine B. analgesic C . insecticide D. antacid |
12 |
| 442 | Write the reaction to prepare acetaldehyde from hydrogen gas and an acid chloride? |
12 |
| 443 | Compound ( Xleft(C_{5} H_{8} O_{2}right) ) forms a dioxime with ( N H_{2} O H . ) On Clemmensen reduction it forms a |
12 |
| 444 | Aldehydes and ketones with or more carbon atoms are either sparingly soluble or insoluble in water A. 5 B. 6 ( c cdot 7 ) D. 8 |
12 |
| 445 | Which one of the following pentafluorides cannot be formed? A. ( P F_{5} ) B. ( A s F_{5} ) ( mathrm{c} . S b F_{5} ) D. ( B i F_{5} ) |
12 |
| 446 | Q. 15 Which of the following conversions can be carried out by Clemmensen reduction? (a) Benzaldehyde into benzyl alcohol (b) Cyclohexanone into cyclohexane (c) Benzoyl chloride into benzaldehyde (d) Benzophenone into diphenyl methane |
12 |
| 447 | ( boldsymbol{C H}_{3}-boldsymbol{C} equiv boldsymbol{C}-boldsymbol{C H}_{3} frac{(i) boldsymbol{x}}{(i i) Z n / boldsymbol{H}_{2} boldsymbol{O}} ) ( boldsymbol{C H}_{3}-underset{boldsymbol{O}}{boldsymbol{V}}-underset{boldsymbol{O}}{boldsymbol{V}}-boldsymbol{C H}_{boldsymbol{3}} ) In the above reaction ( x ) is: A ( . H N O_{3} ) B. ( O_{2} ) ( c cdot O_{3} ) D. ( K M n O_{4} ) |
12 |
| 448 | Which of the following reagents can form a phenylhydrazone with dimethyl ketone? ( mathbf{A} cdotleft[N H_{3} O Hright]^{oplus} C l^{ominus} ) в. ( P h N H N H_{2} ) c. ( N H_{2} N H C O N H_{2} ) D. ( H C N ) |
12 |
| 449 | Carbonyl compounds react with phenyl hydrazine to form: A . oxime B. phenyl hydrazone c. hydrazone D. semicarbazone |
12 |
| 450 | The appropriate reagent for the transformation: ( mathbf{A} cdot Z n(H g), H C l ) ( mathbf{B} cdot N H_{2} N H_{2}, O H^{-} ) ( mathbf{C} cdot H_{2}, N i ) ( mathbf{D} cdot N a B H_{4} ) |
12 |
| 451 | ( boldsymbol{p} boldsymbol{K}_{a} ) and ( boldsymbol{K}_{a} ) of an acid are connected by the relation – – A ( cdot p k_{a}=log k_{a} ) B ( cdot p k_{a}=-p H ) c. ( p k_{a}=-log k_{a} ) D・ ( p k_{a}=- ) logk ( _{b} ) |
12 |
| 452 | Methyl cyanide on hydrolysis gives: A . acetic acid. B. acetaldehyde c. acetone. D. methyl amine. |
12 |
| 453 | The boiling point of aldehyde and ketones depend upon: A. intermolecular dipole-dipole repulsion B. intermolecular dipole-dipole attraction. C. intermolecular induced dipole-dipole attraction. D. none of these. |
12 |
| 454 | Acetone is used: A. for extraction of essential oils B. as a constituent of liquid nail polish C. both A and B D. none of these |
12 |
| 455 | 194. Which of the following reaction would not give at least one aldehyde product? (a) 1-pentyne + B, H, NaOH → (b) 2-butyne + Na _ NH3 () – NaOH (c) 1-pentyne + KMnO4 – (d) Cyclopentene + 0, 1,0 Zn |
12 |
| 456 | ( boldsymbol{C H}_{3} boldsymbol{C H O}+ ) ( boldsymbol{H}_{2} boldsymbol{C}(boldsymbol{C O O R})_{2} frac{(i) boldsymbol{P i p}}{(i i) boldsymbol{H}_{3} O oplus, boldsymbol{Delta}} boldsymbol{A} ) If ( mathbf{A} ) is ( boldsymbol{C} boldsymbol{H}_{boldsymbol{p}}-boldsymbol{C} boldsymbol{H}=boldsymbol{C} boldsymbol{H}-boldsymbol{C} boldsymbol{O}_{boldsymbol{q}} boldsymbol{H} ) Then find the value of ( boldsymbol{p}+boldsymbol{q} ) |
12 |
| 457 | Write the IUPAC names of following ketone or aldehyde. If possible, give common name(s) also. ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}(boldsymbol{B r}) boldsymbol{C H}_{2} boldsymbol{C H}left(boldsymbol{C H}_{3}right) boldsymbol{C H} ) |
12 |
| 458 | Which of the following can be used for protection of carbonyl group: This question has multiple correct options A. ( C H_{2} O H-C H_{2} O H / H ) в. ( C H_{2} O H-C H_{2}-C H_{2} O H / H ) c. ( H S-left(C H_{2}right)_{3}-S H ) D. ( C H_{2} O H-C H_{2}-C H O ) |
12 |
| 459 | You can make an organic acid from ethanol and that is: ( mathbf{A} cdot C_{3} H_{7} O H ) B. found in bees and ants c. acetic acid D. formic acid E. butanoic acid |
12 |
| 460 | Mechanism of Cannizzaros reaction of benzaldehyde is Which of the following reactants can undergo Cannizaro’s reaction? A. ( _{|}^{o} ) ( H-C-H ) в. ( R_{3} C C H O ) ( c ) D. All of these |
12 |
| 461 | Which among the following compounds will not give effervescence with sodium bicarbonate? A. ( C_{6} H_{5} C O_{2} H ) в. ( C_{6} H_{5} S O_{3} H ) ( mathbf{c} cdot C_{6} H_{5} O H ) D. ( C_{6} H_{3} N_{3} O_{7} ) |
12 |
| 462 | Which of the following reagent is used to identify carbonyl group from other functional groups? A. Schiff reagent B. Fehling solution c. 2,4-dinitrophenylhydrazine D. Tollen’s reagent |
12 |
| 463 | Question 6. Aspirin is pain relieving antipyretic drug but can be used to prevent heart attack. Explain. lotolot coamlation and thus har |
12 |
| 464 | Which of the following will have highest value of ( p K a ? ) A. ( F C H_{2} C H_{2} ) СООН в. ( C H_{3} C H(F)- ) СООН c. ( C H_{3} C H(B r)-C O O H ) D. ( C H_{3} C H_{2} C O O H ) |
12 |
| 465 | ( y= ) ( y ) ( y ) ( y ) |
12 |
| 466 | Wang Q. 42 Assertion (A) Formaldehyde is a planar molecule. ar molecule. T Reason (R) It contains sp2 hybridised carbon atom. |
12 |
| 467 | How will you convert Benzene to acetophenone? | 12 |
| 468 | Which reagent should be used for following conversion? A. ( N H_{2}-N H_{2} / O H^{-} ) B . ( H_{2}-P d / C ) ( mathbf{c} . Z n-H g / )Conc ( H C l ) D. Both (A) and (C) |
12 |
| 469 | Which of the following is nucleophilic addition reaction? This question has multiple correct options ( mathbf{A} cdot C H_{3} C O C l frac{C H_{3} M g B r(1 e q)}{ } C H_{3} C O C H_{3} ) ( mathbf{B} cdot C H_{3} C O C H_{3} frac{I_{2} / O H^{-} / Delta}{longrightarrow} C H_{3} C O O^{-}+C H I_{3} ) ( mathbf{c} cdot operatorname{Ph} C H O frac{K C N / H^{oplus}}{longrightarrow} operatorname{Ph} C H(O H)(C N) ) ( mathbf{D} cdot C H_{3} C equiv C M g B r frac{C H_{3} B r}{longrightarrow} C H_{3} C equiv C C H_{3} ) |
12 |
| 470 | Formalin is ( % ) solution of formaldehyde in water A . 10 B. 20 ( c cdot 40 ) D. 60 |
12 |
| 471 | Methyl vinyl ketone on reaction with LiCu Me gives a major product, whose structure is: ( A ) B. ( c ) ( D ) |
12 |
| 472 | Which of the following aldehyde is mostly used as plasticizer? A. Formaldehyde B. Acetaldehyde c. Butyraldehyde D. Benzaldehyde |
12 |
| 473 | A compound, containing only carbon, and hydrogen and oxygen, has a molecular weight of ( 44 . ) On complete oxidation it is converted into a compound of molecular weight ( 60 . ) The original compound is A. an aldehyde B. an acid c. an alcohol D. an ether |
12 |
| 474 | In Kolbe’s reaction with phenol as the reactant, the number of ( O ) atoms in the final product is: |
12 |
| 475 | 0 6 0 6 |
12 |
| 476 | A terpene has molecular formula ( Aleft(C_{10} H_{16} Oright) ) and it is a major constituent of lemongrass oil. ( boldsymbol{A} ) on treatment with acidified ( K M n O_{4} ) solution produces acetone, Oxalic acid and ( boldsymbol{C H}_{3} boldsymbol{C O C H}_{2} boldsymbol{C H}_{2} boldsymbol{C O O H} . boldsymbol{A} | mathbf{s o}, boldsymbol{A} ) does not give silver mirror test with Tollen’s reagent. The correct deduction regarding ( boldsymbol{A} ) is/are: A. ( A ) gives positive iodoform test B. ( A ) has two stereoismers c. ( A ) has one chiral carbon D. ( A ) on treatment with ( N H_{2} O H ) gives six pair of diastereomers |
12 |
| 477 | The order of reactivity of carboxylic acid derivatives is: A. Acid Chloride ( > ) Ester ( > ) Amide ( > ) Acid Anhydride B. Acid Chloride ( > ) Acid Anhydride ( > ) Ester ( > ) Amide C. Acid Chloride ( > ) Amide ( > ) Acid Anhydride ( > ) Ester D. Acid Anhydride > Ester > Amide > Acid Chloride |
12 |
| 478 | Choose the correct statement regarding the physical properties of carbonyl compound. A. All aldehydes are insoluble in benzene B. Higher aldehydes are more fragrant c. n-Butane has more boiling point than acetone D. Methanal and propanone are immiscible with water in all proportions |
12 |
| 479 | An organic compound gives orange precipitate with ( 2,4-D N P H . ) What is the functional group in the compound? |
12 |
| 480 | HgSO4/H2SO4X 207. 1-pentyne BHZ.THF/H,02,0H sy X and Y can be distinguished by: (a) silver-mirror test (b) iodoform test (c) both of these (d) none of these |
12 |
| 481 | The properties of aldehydes and ketones are: This question has multiple correct options A. they can form hydrogen bonds in water B. they can form hydrogen bonds with themselves C. they are polar in nature D. generally boiling point decrease with the increase in molecular weight |
12 |
| 482 | Which of the following could be named as ( 2- ) pentanone? A. ( R-C O O H ) в. ( R-C H O ) c. ( R-C O-R ) D. ( R-C O O-R ) E ( . R-C O-N H_{2} ) |
12 |
| 483 | Write any two uses of ( 40 % ) solution of formaldehyde. |
12 |
| 484 | Which one of the following does not form sodium bisulphite addition product with sodium bisulphite solution? A. ( C H_{3} C O C H_{3} ) ( mathbf{c} cdot C_{6} H_{5} C H O ) D. ( C H_{3} C H O ) |
12 |
| 485 | Question 3. Arrange the following compounds in increasing order of their boiling points. CH3CHO, CH3CH2OH, CH3OCH3, CH3CH,CH, Boiling point is related to attractive forces. Stronger the attractive force, higher is the boiling point, |
12 |
| 486 | Acetaldehyde on reaction with Grignard reagent and subsequent hydrolysis yields: A. tertiary alcohol B. primary alcohol c. secondary alcohol D. both primary and secondary alcohol |
12 |
| 487 | Which of the following order of acidity is correct? (I) ( quad mathbf{C H}_{3}-mathbf{N H}_{2} ) (II) ( mathbf{H}-mathbf{C} equiv mathbf{C}-mathbf{H} ) (III) (IV) A. ( I I I>I V>I>I I ) В. ( I I I>I V>I I>I ) c. ( I V>I I I>I>I I ) D. ( I V>I I I>I I>I ) |
12 |
| 488 | ( C_{n} H_{2 n-1} C O O H ) is the general formula for: A. saturated fatty acids B. unsaturated fatty acids c. simple lipids D. phospholipids |
12 |
| 489 | The IUPAC name of the compound is : A . 1,2,3 -triformyl propane B. 3-formyl-1, 5-pentane dial c. propane-1, 2, 3-trial D. Propane-1, 2, 3-tricarbaldehyde |
12 |
| 490 | The IUPAC name of the formic acid: A. methanoic acid B. ethanoic acid C. propanoic acid D. butanoic acid |
12 |
| 491 | Which of the following methods can be used to prepare propanoic acid? ( mathbf{A} ) B. ( mathrm{CH}_{2}=mathrm{CH}_{2}+mathrm{CO}+underset{(text { Steam })}{mathrm{H}_{2} mathrm{O}}-frac{text { High pressure }}{570-670 mathrm{K}} ) C. Reaction of ( E t M g B r ) with dry ice followed by the acidification with diL ( H C l ) D. Sodium ethoxide is heated with ( C O ) under pressure followed by the acidification with dil, ( H C l ) |
12 |
| 492 | What is meant by an acetal? Give an example of reaction(with mechanism) showing its formation. | 12 |
| 493 | Isobutyraldehyde on oxidation gives: A. 2-Methylpropanoic acid B. 2-Methylpropanone c. Propanoic acid D. 2-Methyl butanoic acid |
12 |
| 494 | The – COOH group in a carboxylic acid canbe replaced by H by heating the acid with : A. zn with HCI B. ( H_{2} ) in presence of nickel c. soda lime D. bromine and concentrated aqueous alkal |
12 |
| 495 | ( boldsymbol{C H}_{3}-boldsymbol{C H O} stackrel{boldsymbol{O H}^{-}}{longrightarrow} boldsymbol{A} ) The IUPAC name of ( boldsymbol{A} ) is: A. aldol B. prop-1-ene-2-ol c. 4 -hydroxy- 4 -methyl 2 -pentanone D. 3-Hydroxybutanal |
12 |
| 496 | What is the final product? ( boldsymbol{C H} ) The compound ( boldsymbol{C H}_{3}-boldsymbol{C}=boldsymbol{C H}- ) ( C H_{3} ) on reaction with ( N a l O_{4} ) in the presence of ( boldsymbol{K} boldsymbol{M} boldsymbol{n} boldsymbol{O}_{boldsymbol{4}} ) A. ( C H_{3} C O C H_{3} ) в. ( C H_{3} C O C H_{3}+C H_{3} C O O H ) c. ( C H_{3} C O C H_{3}+C H_{3} C H O ) D. ( C H_{3} C H O+C O_{2} ) |
12 |
| 497 | Write the IUPAC name of following ketone or aldehyde. If possible, give the common name(s) also. ( boldsymbol{C H}_{3} boldsymbol{C O}left(boldsymbol{C H}_{2}right) boldsymbol{C H}_{3} ) |
12 |
| 498 | ( boldsymbol{R}-boldsymbol{C O O H}+boldsymbol{R}-boldsymbol{C O O N a} rightarrow ? ) | 12 |
| 499 | Acetone on addition to methyl magnesium bromide forms a complex, which on decomposition with acid gives ( X ) and ( M g(O H) B r . ) Which one of the following is ( boldsymbol{X} ) ? ( mathbf{A} cdot C H_{3} O H ) в. ( left(C H_{3}right)_{3} C O H ) ( mathrm{c} cdotleft(mathrm{CH}_{3}right)_{2} mathrm{CHOH} ) D. ( C H_{3} C H_{2} ) OH |
12 |
| 500 | is used in the preparation of chloroform, sulphonal, cordite etc. A. formalin B. ethyl alcoho c. acetone D. none of these |
12 |
| 501 | Arrange the following compounds in increasing order of their boiling points: ( mathbf{C H}_{3} mathbf{C H}_{2} mathbf{C H}_{2} mathbf{C H O}, mathbf{C H}_{3} mathbf{C H}_{2} mathbf{C H}_{2} mathbf{C H}_{2} ) |
12 |
| 502 | ( X frac{H_{2} text { along with boiling xylene}}{P d / B a S O_{4}} C H_{3} C H O ) In the above reaction ( boldsymbol{X} ) is: A ( cdot C H_{3} C O O H ) в. ( C H_{3} ) СОС( l ) c. ( C H_{3} C O C H_{3} ) D. ( C H_{3} C H_{2} ) ОН |
12 |
| 503 | Compound ( A ) undergoes formation of cyanohydrins which on hydrolysis gives lactic acid ( left(boldsymbol{C H}_{3} boldsymbol{C H O H} boldsymbol{C O O H}right) ) Therefore, compound ( boldsymbol{A} ) is: A. formaldehyde B. acetaldehyde c. acetone D. benzaldehyde |
12 |
| 504 | An unknown compound has molecular formula ( C_{7} H_{12} ).It gives two aldehydes shown below upon ozonolysis followed by workup with ( Z n-H_{2} O . ) What is the the structure of the original compound? and ( A ) B. ( c ) D. None of the above |
12 |
| 505 | The correct order of increasing acidic strength is: A. Phenol ( < ) Ethanol ( < ) Chloroacetic acid ( < ) Acetic acid B. Ethanol ( < ) Phenol ( < ) Chloroacetic acid ( < ) Acetic acid C. Ethanol ( < ) Phenol ( < ) Acetic acid ( < ) Chloroacetic acid D. Chloroacetic acid ( < ) Acetic acid ( < ) Phenol ( < ) Ethanol |
12 |
| 506 | When benzene sulphuric acid and ( p ) nitrophenol are treated with ( N a H C O_{3} ) the gases released, respectively are: A. ( S O_{2}, N O_{2} ) в. ( S O_{2}, N O ) ( mathrm{c} cdot mathrm{SO}_{2}, mathrm{CO}_{2} ) D. ( C O_{2}, C O_{2} ) |
12 |
| 507 | Acetophenone cannot be prepared easily starting from: A ( cdot C_{6} H_{5} C H_{3} ) B . ( C_{6} H_{6} ) ( mathbf{c} cdot C_{6} H_{5} C H(O H) C H_{3} ) D. ( C_{6} H_{5} C equiv C H ) |
12 |
| 508 | Reaction by which Benzaldehyde cannot be prepared? ( mathbf{A} ) co in ( mathrm{CS}_{2} ) followed by ( mathrm{H}_{3} mathrm{O} ) B. in presence of ( mathrm{Pd}-mathrm{BaSO}_{4} ) ( c ) in presence of anhydrous [ mathrm{AlCl}_{3} ] D. and conc. HCl |
12 |
| 509 | Which of the following compounds will give acetic acid with ( boldsymbol{K} boldsymbol{M} boldsymbol{n} boldsymbol{O}_{4} / boldsymbol{H} oplus / boldsymbol{Delta} ? ) A ( cdot C H_{3}-C H O ) в. ( C H_{3}-C H=C H-C H_{3} ) c. ( C H_{3}-C=C-C H_{3} ) D. ( C H_{2} C H_{2} O H ) |
12 |
| 510 | Phenoxide ion has ( _{-} ) number of resonating structures than benzoate ion and benzoic acid is a acid than phenol. A. more, stronger B. more, weaker c. less, stronger D. less, weaker |
12 |
| 511 | Which one of the following contains either aldehyde or ketones in it? This question has multiple correct options A. vanillin B. Acetone c. Camphor D. Formalin |
12 |
| 512 | The missing reagent in the sequence of synthesis shown is: A. bromocyclopentane B. 1,5 -dibromopentane C. 1,4 -dibromobutane D. 1,1 -dibromocyclopentane |
12 |
| 513 | What is meant by the Semicarbazone? Give an example of reaction(with mechanism) showing its formation. | 12 |
| 514 | The structure of 6-hydroxyheptanal is: ( mathbf{A} cdot C H_{3}-C H_{2}-C H(O H)-C H_{2}-C H_{2}-C H_{2}- ) ( C H O ) B. ( C H_{3}-C H_{2}-C H_{2}-C H(O H)-C H_{2}-C H O ) ( mathbf{c} cdot C H_{3}-C H(O H)-C H_{2}-C H_{2}-C H_{2}-C H O ) D. ( C H_{3}-C H(O H)-C H_{2}-C H_{2}-C H_{2}-C H_{2}- ) ( C H O ) |
12 |
| 515 | Identify the compounds ( A, B ) and ( C ) (i) ( boldsymbol{C}_{2} boldsymbol{H}_{5} boldsymbol{O} boldsymbol{H} quad boldsymbol{P C l}_{5} quad boldsymbol{A} quad boldsymbol{K} boldsymbol{C} boldsymbol{N} ) (ii) ( boldsymbol{C}_{6} boldsymbol{H}_{5} boldsymbol{C O O H} quad boldsymbol{S O C l}_{2}, boldsymbol{A} quad boldsymbol{N H}_{3} ) |
12 |
| 516 | A major constituent of vinegar is: A. Methanoic acic B. Benzoic acid c. Ethanoic acid D. Picric acid |
12 |
| 517 | 2-Acetoxybenzoic acid is called: A . paracetamol B. aspirin c. heroine D. mordant dye |
12 |
| 518 | What is the correct order of acidity in the given compounds? A. ( I<I I<I I I ) В. ( I I I<I<I I ) c. ( I I<I<I I I ) D. III ( <I I<I ) |
12 |
| 519 | 5 0 8 8 |
12 |
| 520 | Which statements is/are correct? dl or ( (pm) ) or raccmic (A) This question has multiple correct options A. Compound (B) is meso- and (C) is racemic-1, 2dimethyl cyclohexane B. Compound (B) is racemic-and (C) is meso-1, 2dimethyl cyclohexane c. compound (D) is 1,2 -dimethyl cyclohexane D. Octane-2,7-dione is obtained on reductive ozonolysis of compound (D) |
12 |
| 521 | Compound ( B ) is: A. в. (B) ( c ) D. |
12 |
| 522 | Starting with 1- butyne, how could you make 3-hexanone? | 12 |
| 523 | Draw the structures of the following compounds. (i) 3-Methylbutanal (ii) Nitropropiophenone (iii) p-Methylbenzaldehyde 4-Methylpent-3-en-2-one (v) 4 -Chloropentan-2-one ( (mathbf{v} mathbf{i}) ) Bromo-4-phenylpentanoic acid (vii) p,p-Dihydroxybenzophenone Hex-2-en-4-ynoic acid |
12 |
| 524 | ( C_{6} H_{6}+B r_{2} stackrel{F e}{rightarrow} C_{6} H_{5} B r+H B r ) is an example for: A. free radical substitution reaction B. electrophilic substitution reaction c. nucleophilic addition reaction D. nucleophilic substitution reaction |
12 |
| 525 | The IUPAC name of cinnamaldehyde is: A . (2E)-3-phenylprop-2-enal B. (2Z)-1-phenylprop-1-enal C . ( (2 E) ) -1-phenylprop-2-enal D. (2Z)-3- phenylprop-1-enal |
12 |
| 526 | Q. 26 Oxidation of ketones involves carbon-carbon bond cleavage. Name the products formed on oxidation of 2, 5-dimethylhexan-3-one. |
12 |
| 527 | ( boldsymbol{C H}_{3} boldsymbol{C O C l}+boldsymbol{H}_{2} frac{boldsymbol{P d} / boldsymbol{B a S O}_{4}}{boldsymbol{}} ) ( boldsymbol{C H}_{3} boldsymbol{C H O}+boldsymbol{H C l} ) Which of the following option is correct about the given reaction? A. Aldol condensation B. Clemmensen reduction c. Rosenmund reduction D. carbylamine reaction |
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| 528 | Ketones ( left(boldsymbol{R}_{1} boldsymbol{C O} boldsymbol{R}_{2}right) ; boldsymbol{R}_{1}=boldsymbol{R}_{2}= ) alkyl group, can be obtained in one step by: |
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| 529 | Explain the preparation of carboxylic acids from Grignard reagent. Give equation. |
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| 530 | How many ( H C l ) molecules are lost when Acetyl chloride is converted to Ethanal by Rosenmund reduction? |
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| 531 | ( 0.40 g ) of an organic compound ( (A) ) (Molecular formula ( C_{5} H_{8} O ) ) reacts with ( x ) mole of ( C H_{3} M g B r ) to liberate ( 224 m L ) of a gas at STP.With excess of ( boldsymbol{H}_{2},(boldsymbol{A}) ) gives pentan-1-ol. The correct structure of ( (A) ) is: A ( cdot C H_{3}-C equiv C-C H_{2}-C H_{2}-O H ) в. ( C H_{3}-C H_{2}-C equiv C-C H_{2}-O H ) c. ( H-C equiv C-C H_{2}-C H_{2}-C H_{2}-O H ) D. ( H-C equiv C-C H_{2}-C H-C H_{3} ) 扎 |
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| 532 | Assertion Rate of nitration is ( C_{6} H_{6} simeq C_{6} D_{6} simeq ) ( boldsymbol{C}_{boldsymbol{6}} boldsymbol{T}_{boldsymbol{6}} ) Reason Formation of intermediate is rate determining step in nitration of benzene, not the breaking of ( boldsymbol{C}-boldsymbol{H} ) or ( C-D ) bond A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is correct but Reason is incorrect D. Assertion is incorrect but Reason is correct |
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| 533 | The IUPAC name of the compound ( boldsymbol{C H}_{3}-boldsymbol{C H}left(boldsymbol{C H}_{3}right)-boldsymbol{C H}left(boldsymbol{C H}_{3}right)- ) ( boldsymbol{C H}=boldsymbol{C H}-boldsymbol{C H}_{2}-boldsymbol{C H O} ) is: A. 5,6 -Dimethylhept- – -en-1-al B. 2,3-Dimethyl-4-en-7-al c. 5,6 -Dimethylhept- – -ene-1-al D. 5,6-Isopropylpent-3-ene-1-al |
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| 534 | when compound ( mathbf{C} ) is treated with ( boldsymbol{B} boldsymbol{r}_{2} / boldsymbol{C} boldsymbol{C l}_{4} ) A. a meso dibromide is formed. B. four stereo-isomers of dibromides are fromed. C . racemic mixture of dibromides are formed. D. a pair of enantiomers of dibromides in unequal amount is formed. |
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| 535 | Give one chemical test each to distinguish between the following pairs of compounds: (1) Ethanol and acetic acid (2) Acetaldehyde and benzaldehyde |
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| 536 | Compound ( C_{4} H_{8} O_{2} ) exists in various structures as shown:
Which statement(s) is/are correct? |
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| 537 | Consider the following reaction. ( o^{16} ) ( boldsymbol{C H}_{3}-stackrel{|}{boldsymbol{C}}-boldsymbol{O}^{18}-boldsymbol{C}_{2} boldsymbol{H}_{5}+ ) ( boldsymbol{H}_{2} boldsymbol{O}^{16} frac{boldsymbol{H} boldsymbol{e} boldsymbol{a} boldsymbol{t}}{boldsymbol{H}^{+}} ) The products formed in the reaction are: ( A ) ( C H_{3}-stackrel{vartheta^{16}}{C}-O^{16} H ) and ( C_{2} H_{5} O^{18} H ) В. [ C H_{3}-C^{mid 6}-O^{18} H text { and } C_{2} H_{5} O^{16} H ] ( c ) ( C H_{3}-stackrel{vartheta^{16}}{C}-O^{16} H ) and ( C_{2} H_{5} O^{16} H ) D. ( C H_{3}-stackrel{vartheta_{1}^{prime 8}}{C}-O^{18} H ) and ( C_{2} H_{5} O^{18} H ) |
12 |
| 538 | ( C H_{3} C H_{2} O H stackrel{O}{longrightarrow} C H_{3} C H O stackrel{O}{longrightarrow} ) ( C H_{3} C O O H ) Give the oxidizing agent in the given reactions |
12 |
| 539 | State the oxidation number of carbonyl carbon in methanal and methanoic acid respectively: A. 0 and 0 B. 0 and +2 ( c cdot+1 ) and +2 D. +1 and +3 |
12 |
| 540 | Write structural formulae of the organic compounds ( ^{prime} boldsymbol{A}^{prime},^{prime} boldsymbol{B}^{prime},^{prime} boldsymbol{C}^{prime} ) and ( ^{prime} boldsymbol{D}^{prime} ) in the following sequence of reaction. ( boldsymbol{A}^{prime}+boldsymbol{C} boldsymbol{H}_{3} boldsymbol{M} boldsymbol{g} boldsymbol{B} boldsymbol{r} stackrel{boldsymbol{H}_{2} boldsymbol{O}}{longrightarrow} ) ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}(boldsymbol{O H}) boldsymbol{C H}_{3} frac{c o n c . boldsymbol{H}_{2} boldsymbol{S O}_{4}}{boldsymbol{1}} ) ( ^{prime} boldsymbol{B}^{prime} stackrel{boldsymbol{B} boldsymbol{r}_{2}}{longrightarrow}^{prime} boldsymbol{C}^{prime} stackrel{text {alc.} boldsymbol{K O H}}{longrightarrow} boldsymbol{D}^{prime} ) |
12 |
| 541 | A triene is treated with ozone followed by zinc in acetic acid to give the following three products. What is the structure of the triene ( A ) в. ( c ) D. |
12 |
| 542 | Which of the following has highest boiling point? A. ( C_{2} H_{5} O H ) в. ( C H_{3} ) СООН c. ( C H_{3} ) СОСН ( _{3} ) D. ( C_{2} H_{6} ) |
12 |
| 543 | Name the following compound according to the IUPAC system or nomenclature: ( boldsymbol{C H}_{3} boldsymbol{C H}left(boldsymbol{C H}_{3}right) boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{C H O} ) |
12 |
| 544 | Carbonyl group of aldehyde and ketone contain A. carbon and oxygen B. carbon and nitrogen c. carbon and sulphur D. none of these |
12 |
| 545 | Which of the following substance exists as a gas at room temperature? A. Formaldehyde B. Para formaldehyde c. Trioxane D. All of the above. |
12 |
| 546 | What is the action of the following reagent on ethanoic acid? ( boldsymbol{L} boldsymbol{i} boldsymbol{A l} boldsymbol{H}_{4} / boldsymbol{H}_{3} boldsymbol{O}^{+} ) |
12 |
| 547 | Determine the major product of the given reaction: |
12 |
| 548 | The compound that neither forms semicarbazone nor oxime is: A. ( H C H O ) в. ( C H_{3} )СОСН( _{3} ) с. ( C H_{3} C H O ) D. ( C H_{3} C H_{2} C H_{2} N H_{2} ) E ( cdotleft(C H_{3}right)_{2} C H C H O ) |
12 |
| 549 | Oxime is the product of the following: A. ( >C=O+ ) hydrazine B. ( >C=O+ ) Phenylhydrazine ( c ) [ -mathrm{C}-mathrm{O} mathrm{H}+mathrm{SOCl}_{2} ] D. >CO + Hydroxylamine |
12 |
| 550 | Which reagent is used in Rosenmund reduction? ( mathbf{A} cdot H_{2} / P d-B a S O_{4} ) ( mathbf{B} cdot L i A I H_{4} ) ( mathbf{c} cdot N H_{2}-N H_{2} / K O H / C H_{2} O H-C H_{2} O H ) ( mathbf{D} cdot Z n-H g / H C l ) |
12 |
| 551 | Q. 12 Which of the following alkenes on ozonolysis give a mixture of ketona only? (a) CH-CH=CH-CH, (b) CH–C-CH=CH, CH, CH₃ (d) (CH3)2C=C CH3 CH3 |
12 |
| 552 | Question 2. Write a test to differentiate between pentan-2-one and pentan-3-one. |
12 |
| 553 | The oxidation of toluene to benzaldehyde by chromyl chloride is called: A. Etard reaction B. Riemer – Tiemann reaction c. Wurtz reaction D. Cannizzaro’s |
12 |
| 554 | In deodorant soaps, the additive added is: A. glycerol B. stearic acid c. potassium bicarbonate D. 3,4,5-tribromo salicylaldehyde |
12 |
| 555 | -CHO group is A. ( + ) ME and tle group B. -ME and -IE group C . +ME and -IE group D. -ME and +IE group |
12 |
| 556 | Study the given reaction and identify the process which is carried out. [ left.rangle mathrm{c}=mathrm{O}+mathrm{NaHSO}_{3} rightarrow lambda_{mathrm{SO}_{3} mathrm{Na}}^{/ mathrm{OH}} frac{mathrm{Na}_{2} mathrm{CO}_{3}}{rightarrow}rightrangle mathrm{C}=0 ] A. It is used for purification of aldehydes and ketones B. It is used to distinguish aldehydes from ketones c. It is used to prepare cyclic aldehydes and ketones D. It is used to study polar nature of aldehydes and ketones |
12 |
| 557 | The correct name of the given compound: ( boldsymbol{C H}_{3}-underset{boldsymbol{O} boldsymbol{H}}{boldsymbol{C}}-boldsymbol{C O O H} ) A. glycoxal B. lactic acid c. glycine D. glyceraldehyde |
12 |
| 558 | Which of the following reactions will give ( alpha- ) hydroxy acid as a product? ( mathbf{A} cdot C H_{3}-C H O frac{(i) N a C N / H C l}{(i i) H_{2} O / H^{oplus} / Delta} ) в. ( C H_{3}-C H O+B r-C H_{2}- ) ( operatorname{COOC}_{2} H_{5} frac{(i) Z_{n}}{(i i) N H_{4} C l / H O H} ) ( (i i i) H O H / H^{oplus} / Delta ) c. ( C H_{3}- ) COOH ( stackrel{text { NaOH } / text { НОН }}{longrightarrow} ) D. All of these |
12 |
| 559 | Reduction of acetyl chloride with ( H_{2} ) in presence of Pd and ( B a S O_{4} ) gives : A. ( C H_{3} C O C H_{3} ) в. ( C_{2} H_{5} O H ) с. ( C H_{2} ) СООН D. ( C H_{3} C H O ) |
12 |
| 560 | Which of the following is used for purification of aldehydes from impurities? ( mathbf{A} cdot H C N ) в. ( operatorname{NaHSO}_{3} ) c. ( C H_{3} M g B r ) D. ( N a_{2} S O_{4} ) |
12 |
| 561 | Number of intramolecular aldol condensation product is: [ begin{array}{c} stackrel{0}{|} \ mathrm{CH}_{3}-mathrm{C}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{I}-mathrm{H} \ mid mathrm{KOH} end{array} ] ( A ) B. ( c cdot 3 ) ( D ) |
12 |
| 562 | ( R-C H_{2}-C H_{2} O H ) can be converted into ( R C H_{2} C H_{2} C O O H ) by the following sequence of steps: ( mathbf{A} cdot P B r_{3}, K C N, H_{2} / P t ) B. ( P B r_{3}, K C N, H_{3} O^{+} ) c. ( H C N, P B r_{3}, H_{3} O^{+} ) D. ( K C N, H_{3} O^{+} ) |
12 |
| 563 | Which of the following presents the correct order of the acidity in the given compounds? A. ( F C H_{2} C O O H>C l C H_{2} C O O H>B r C H_{2} C O O H> ) ( C H_{3} C O O H ) в. ( C H_{3} C O O H>B r C H_{2} C O O H>C l C H_{2} C O O H> ) ( F C H_{2} C O O H ) c. ( F C H_{2} C O O H>C H_{3} C O O H>B r C H_{2} C O O H> ) ( _{C l C H_{2} C O O H} ) D. ( B r C H_{2} C O O H>C l C H_{2} C O O H>F C H_{2} C O O H> ) ( C H_{3} C O O H ) |
12 |
| 564 | Q. 3 The correct order of increasing acidic strength is – (a) phenol < ethanol < chloroacetic acid < acetic acid (b) ethanol < phenol < chloroacetic acid < acetic acid (c) ethanol < phenol < acetic acid < chloroacetic acid (d) chloroacetic acid < acetic acid < phenol < ethanol otoblo con |
12 |
| 565 | ( boldsymbol{O} ) ( boldsymbol{P h}-boldsymbol{C H}_{2}-stackrel{|}{boldsymbol{C}}-boldsymbol{O H} ) ( (A) ) is : A. ( P h-C O_{2} H ) в. ( P h-C H_{2}-O H ) c. ( P h-C H_{3} ) D. |
12 |
| 566 | Which of the following represents the correct order of the acidity in the given compounds? A ( cdot F C H_{2} C O O H>C H_{3} C O O H>B r C H_{2} C O O H> ) ( mathrm{ClCH}_{2} mathrm{COOH} ) в. ( B r C H_{2} C O O H>C l C H_{2} C O O H>F C H_{2} C O O H> ) ( C H_{3} C O O H ) c. ( F C H_{2} C O O H>C l C H_{2} C O O H>B r C H_{2} C O O H> ) ( C H_{3} C O O H ) D. ( C H_{3} C O O H>B r C H_{2} C O O H>C l C H_{2} C O O H> ) ( F C H_{2} C O O H ) |
12 |
| 567 | The strongest acid among the following acids is : ( mathbf{A} . quad H C O O H ) в. ( C H_{3} )СООН c. ( left(C H_{3}right)_{2} C H C O O H ) D. ( left(C H_{3}right)_{3} C C O O H ) |
12 |
| 568 | y are carboxylic acids more acidic than alcohols or phenols although all of them have hydrogen atom attached to a oxygen atom -0-H)? Ans. Carboxylic acido a |
12 |
| 569 | Which of the following set of reaction ( R-C-O H ) as the can not prepare final product? A ( cdot R-M g X+O=C=O frac{d r y cdot e t h e r}{longrightarrow} A frac{H_{3} O^{+}}{longrightarrow} ) в. ( R-C N frac{S nleft(l_{2}+H C lright.}{(i i) H_{2} O / H^{+}} ) ( c ) D. ( C H_{3}left(C H_{2}right)_{8} C H_{2} O H frac{C r O_{3}}{H_{2} S O_{4}} ) |
12 |
| 570 | Structural isomerism and stereoisomerism should be considered when answering this question. The molecular formula of compound ( x ) is ( C_{5} H_{12} O ) Compound ( X: ) reacts with alkaline aqueous iodine can be dehydrated to form two alkenes only. What could be the identify of compound X? A. ( C H_{3} C H_{2} C Hleft(C H_{3}right) C H_{2} O H ) B. ( C H_{3} C H_{2} C H(O H) C H_{2} C H_{3} ) ( mathbf{c} cdotleft(C H_{3}right)_{2} C H C H(O H) C H_{3} ) D. ( C H_{3} C H_{2} C H_{2} C H(O H) C H_{3} ) |
12 |
| 571 | Find a wrong statement from the given statements. A. oxalic acid is used for making metal polish B. benzoic acid is used in manufacture of dyes C. oxalic acid in form of ferrous potassium oxilate used as developer in photography D. benzoic acid is used for making metal polish |
12 |
| 572 | (D) and (C) are: A. Isomeric alkane B. Isomeric alkene C. Not isomers D. ( (C) ) is an alkene and (D) is salt |
12 |
| 573 | Q. 62 Benzoic acid is an organic compound. Its crude sample can be purified by crystallisation from hot water. What characteristic differences in the properties of benzoic acid and the impurity make this process of purification suitable ? |
12 |
| 574 | Which of the following is not a monovalent group? A. Aldehydic B. Ketonic c. carboxylic D. Hydroxy |
12 |
| 575 | The acid which contains both ( -O H ) and ( – ) COOH groups is: A. phthalic acid B. adipic acid c. glutaric acid D. salicylic acid |
12 |
| 576 | Etard reaction in the following is: A. oxidation of toluene to benzaldehyde by chromylchloride B. oxidation of toluene to benzaldehyde by alkaline ( K M n O_{4} ) C . dry distillation of calcium benzoate D. reaction of benzene with ( C l_{2} ) in the presence of UV light |
12 |
| 577 | Citric acid is present in lemon. Apple contains: A . lactic acid B. malic acid c. tartaric acid D. oxalic acid |
12 |
| 578 | Ethanoic acid is a member of homologous series with general formula ( C_{n} H_{2 n+1} C O O H ) i) Name the series and give its functional group. ii) Give the molecular formula and the common name of ethanoic acid. iii) If this compound is mixed with ethanol in the presence of Conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) a sweet smelling compound is formed. Give the equation and name the compound. iv) Ethanoic acid reacts with carbonates. Which gas is liberated during this reaction? v) Write the balanced equation for the reaction of ethanoic acid with carbonate. vi) Your grandmother has prepared mango pickle. What has she added to preserve it for a long time? |
12 |
| 579 | Draw the structural formula for each of the following: 1. 2,3 – dimethyl butane 2. Diethyl ether 3. Propanoic acid. |
12 |
| 580 | Consider the following reaction: The m-isomer of D and E is called: A. Phthalic acid B. Isophthalic acid c. Terephthalic acid D. None |
12 |
| 581 | Product ( Q ) is: ( A ). An amide B. An amine C. Nitro compound D. Nitrite Compound |
12 |
| 582 | toppr Q Type your question_ ( A ) ( B ) ( c ) D. |
12 |
| 583 | Statement- – I: The addition of ammonia derivatives on carbonyl compound is carried in weakly acidic medium. Statement- II : In weakly acidic medium attacking nuclephile is also protonated. A. Both the statements are true and statement-ll is the correct explanation of statement-I. B. Both statements are true but statement-ll is not the correct explanation of statement-I. c. statement-l is true but statement-ll is false D. Statement-I is false but statement-II is true. |
12 |
| 584 | Correct arrangement of the following acids in correct ( boldsymbol{K}_{3} ) order is : ( (boldsymbol{I}) boldsymbol{H} mathbf{3} boldsymbol{N} oplus boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C O O H}(boldsymbol{I I}) boldsymbol{N C C H} mathbf{2 C} ) A ( .|>||>|||>|V| ) ( V ) B. || >|>॥|> |V c. ( |>|||>||>mid V ) D. IV>||| > || > | |
12 |
| 585 | The product (B) is: A. Benzaldehyde B. Benzoic acid C. Phenylacetic acid D. None of the above |
12 |
| 586 | ( d ) ( d ) ( d ) ( x ) |
12 |
| 587 | Which of the following does not uses formaldehyde in its preparation? A. Melamine polymer B. Bakelite c. РнВу D. preservation of biological specimens |
12 |
| 588 | The products of ( (A) ) on ozonolysis followed by reduction with LAH are: ( mathbf{A} ) ( B ) ( C ) ( D ) |
12 |
| 589 | n-Butylbenzene on oxidation with hot alkanine ( K M n O_{4} ) gives: A. Benzoic acid B. Butanoic acid c. Benzyl alcohol D. Benzaldehyde |
12 |
| 590 | Pinacolone is: A. 2,3 -dimethyl- 2,3 -butanediol B. 3, 3-dimethyl-2-butanone C. 1 -phenyl-2-propanone D. 1,1 -diphenyl-1, 2-ethandiol |
12 |
| 591 | The product formed in the given reaction will react with ( x ) molecules of ( C H_{3} M g B r . ) What is ( x ? ) |
12 |
| 592 | What is the formula of acrolein? A. ( C H_{2}=C H-C N ) В. ( C H_{2}=C H-C H O ) c. ( C H_{2}=C H-C O O H ) D. ( C H_{2}=C H-C O N H_{2} ) |
12 |
| 593 | ( H B r ) fails to give addition products with carbonyl compounds. Is the above statement true? A. True B. False |
12 |
| 594 | is a transparent liquid that is highly flammable. A. Uranium B. Methane c. Ethane D. Acetone |
12 |
| 595 | Among the following compounds, identify total number of compounds that liberate ( C O_{2} ) gas on reaction with ( N a H C O_{3} ) |
12 |
| 596 | 45. Which one of the following is found in Vinegar ? (1) Acetic acid (2) Propionic acid (3) Formic acid (4) Butyric acid |
12 |
| 597 | ( C_{4} H_{8} O_{2} ) represents: ( A ). an acid only B. an ester only c. an ketone only D. an acid and an ester also |
12 |
| 598 | Which of the following compounds are not soluble in water? A. Formaldehyde B. Acetaldehyde c. Acetone D. None of the above |
12 |
| 599 | (D) ( frac{(i) N H_{2} N H_{2}}{(i i) C_{2} H_{5} O N a} mathrm{CH}_{3} mathrm{CH}_{2} mathrm{CH}_{3} ) ( D ) in the given reaction is: A. Iso-propyl alcohol B. Butanaldehyde c. Acetone D. None of these |
12 |
| 600 | Write the IUPAC names of the following ketone or aldehyde. If possible, give common name(s) also. ( mathrm{Ph}-mathrm{CH} equiv mathrm{CH}-mathrm{CHO} ) |
12 |
| 601 | Propose structure/structures for the hydrocarbon that gives the following products on oxidative cleavage by ( boldsymbol{K} boldsymbol{M} boldsymbol{n} boldsymbol{O}_{4} / boldsymbol{H}^{oplus} ) |
12 |
| 602 | a) Explain Rosenmund reduction with equation b) How does propanone ( left(C H_{3} C O H_{3}right) ) reacts with hydrazine? Give equation. c) Name an oxidising agent used in the Etard’s reaction. |
12 |
| 603 | Which of the following is correct? A. Formic acid is used in medicine for the treatment of gout B. Propanoic acid is used as an antiseptic in the preservation of fruit juice C. Ethanoic acid is a coagulating agent in rubber industry D. None of these |
12 |
| 604 | Tartaric acid is a colourless, crystalline acid found in fruit juices, like that of grapes. Some of its uses are mentioned here. Pick the false one: A. In photography B. In cosmetics c. In dyeing of cloth D. In medicines |
12 |
| 605 | In the sequence of reaction ( C_{2} H_{2} frac{H_{2} S O_{4}}{H g S O_{4}} A stackrel{[O]}{longrightarrow} B ) The compound B is: A. ethanoic acid B. propanone c. ethanol D. methanal |
12 |
| 606 | ( C H_{3} C H_{2} C O O H frac{B r / R e d p}{Delta} ) ( (A) stackrel{a l c . N H_{3}}{ } B ) The final product (B) in the above reaction is A. Alanine B. Pyruvic acid c. citric acid D. Lactic acid |
12 |
| 607 | Draw the structure of the following compound: 4-Chloropentan-2-one |
12 |
| 608 | The reagents ( X ) and ( Y ) are respectively: A ( cdot X=C H_{3} C O C l / A l C l_{3}, Y=K M n O_{4} / O H^{Theta} / Delta ) (acidification) B. ( X=C H_{3} C H_{2} C l / A l C l_{3}, Y=C r O_{3} / H^{+} / Delta ) C. ( X=C H_{3} C O C l / A l C l_{3}, Y=I_{2} / N a O H, ) (acidification) D. ( X=K M n O_{4} / O H^{Theta} / Delta, ) (acidification), ( Y= ) ( C H_{3} C H_{2} C l / A l C l_{3} ) |
12 |
| 609 | What are ( X ) and ( Y ? ) ( |+N B S quad longrightarrow quad X frac{(i) M g / text { ether }}{(i i) C_{2}_{2}:} Y Y ) A. ( x: 1 ) -bromo cyclohex- 1 -ene ( Y ) : Cyclohex- 1 -enoic acid B. ( x: 1- ) bromo cyclohex-2-ene Y: Cyclohex-2-enal c. ( x: 3 ) -bromo cyclohexene ( Y ) : Cyclohex-2-enoic acid D. None of these |
12 |
| 610 | Which of the following reacts with water to form very stable product? A. ( C H_{3} C l ) в. ( C C l_{4} ) c. ( C C l_{3} C H O ) D. ( C H_{2} C l C H_{2} C l ) |
12 |
| 611 | 10.7 Which products is formed when the compound with concentrated aqueous KOH solution? CHC is treated CHO cho-OR + CH OH O th |
12 |
| 612 | Formaldehyde is used: A. for preserving biological specimens B. for the preparation of urotropine C. in the manufacture of bakelite D. all of these |
12 |
| 613 | The products for the following reactions are: (i) ( C H_{3}-C_{H}^{B r}-C H_{2}-C H_{3}+ ) alc. ( boldsymbol{K O H} rightarrow boldsymbol{X} ) (ii) ( boldsymbol{C H}_{3}-underset{_{mathrm{I}}^{mathrm{CH}}}{boldsymbol{H}}-boldsymbol{C H}=boldsymbol{C H}_{2} stackrel{boldsymbol{O}_{3}}{longrightarrow} ) ( boldsymbol{Y}+boldsymbol{Z} ) A. ( X=left(C H_{3}right)_{2} C=C H_{2}, Y=C H_{3} C H_{2} C H O, Z= ) ( C H_{3} C H_{2} C H O ) B. ( X=C H_{2}=C H_{2}, Y=C H_{3} C H O, Z=C H_{3} C O O H ) c. ( X=C H_{3}-C H=C H-C H_{3}, Y=C H_{3}-C H ) D. ( X=C H_{3}-C H=Cleft(C H_{3}right)_{2}, Y=H C H O, Z= ) ( C H_{3} C H O ) |
12 |
| 614 | What is the common name of ( mathbf{C H}_{3} mathbf{C O O H} ? ) |
12 |
| 615 | When 3 -hydropropanal is treated q with methylmagnesium iodide in equimolar amounts, the most probable product will be: ( A ) B. ( c ) D. There will be no net reaction |
12 |
| 616 | Which of the following reagent is used for the separation of acetaldehyde from acetophenone? A. ( N H_{2} O H ) B. ( N a O l ) c. Tollen’s reagent D. ( C_{6} H_{5} N H N H_{2} ) |
12 |
| 617 | ( frac{sigma}{sigma} ) ( frac{sigma}{sigma} ) ( sigma ) |
12 |
| 618 | Which statement is correct? A. Fumaric acid is stronger than Maleic acid. B. Maleic acid is stronger than fumaric acid C. Both (a) and ( b) D. None of the above |
12 |
| 619 | Draw the structure of the following compound: p,p’-Dihydroxybenzophenone |
12 |
| 620 | (1) Convert I to II. |
12 |
| 621 | Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Why? | 12 |
| 622 | Which of the following orders is true regarding the acidic nature of ( C ) OOH? A. Formic acid ( > ) Acetic acid ( > ) Propanoic acid B. Formic acid ( > ) Acetic acid ( < ) Propanoic acid C. Formic acid < Acetic acid < propanoic acid D. Formic acid Propanoic acid |
12 |
| 623 | 0.49 Write down functional isom formula C2H60. Wh * down functional isomers of a carbonyl compound with molecular mula C3H60. Which isomer will react faster with HCN and why? Explain e mechanism of the reaction also. Will the reaction lead to the completion with the conversion of whole reactant into product at reaction conditions? If a strong acid is added to the reaction mixture what will be the effect on concentration of the product and why? Sara |
12 |
| 624 | The boiling point of aldehyde and ketones are: A. higher than those of alcohols of similar molecular masses B. lower than those of alcohols of similar molecular masses C. similar to the alcohols of similar molecular masses D. similar to the alcohol of different molecular mass |
12 |
| 625 | Assertion STATEMENT-1: 2,2-dimethylpropanal undergoes cannizzaro reaction with concentrated ( N ) a ( O H ) Reason STATEMENT-2: Cannizzaro reaction is a disproportionation reaction. A. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT- 1 B. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1 C. STATEMENT-1 is True, STATEMENT-2 is False D. STATEMENT-1 is False, STATEMENT-2 is True |
12 |
| 626 | ( frac{sqrt{0}}{frac{6}{x}} ) ( frac{sqrt{2}}{2} ) | 12 |
| 627 | Which of the following is the stable enol form of ( 1,3- ) cyclohexanedione? ( A cdot i ) B. i i c. iii D. iv ( E ) |
12 |
| 628 | The IUPAC name for the compound ( boldsymbol{C H}_{3}-boldsymbol{C}left(boldsymbol{C H}_{3}right)=boldsymbol{C H}-boldsymbol{C O O H} ) is: A. 2-Methyl-2-butenoic acid B. 3-Methyl-3-butenoic acid c. 3-Methyl-2-butenoic acid D. 2-Methyl-3-butenoic acid |
12 |
| 629 | Position of double bond in alkenes can be identified by: A. bromine water B. ammoniacal silver nitrate solution c. ozonolysis D. Baeyer’s test |
12 |
| 630 | ( frac{ln x}{x^{2}} ) ( frac{d^{2}}{d^{2}} ) |
12 |
| 631 | The correct order of reativity of PhMg Br towards given compounds. ( P h-stackrel{0}{C}-P h quad C H_{3}-stackrel{0}{C}-H C H_{3}- ) ( stackrel{0}{N}-C H_{3} ) (1) (11) A ( cdot(I)>(I I)>(I I I) ) B. ( (I I I)>(I I)>(I) ) c. ( (I I)>(I I I)>(I) ) D. ( (I)>(I I I)>(I I) ) |
12 |
| 632 | Compound X has the molecular formula ( boldsymbol{C}_{3} boldsymbol{H}_{boldsymbol{6}} boldsymbol{O}_{3} ) Heating X under reflux with acidified ( K_{2} C r_{2} O_{7} ) forms ( H O_{2} C C O C O_{2} H ) Reacting ( X ) with ( N a B H_{4} ) forms ( boldsymbol{H} boldsymbol{O} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}(boldsymbol{O} boldsymbol{H}) boldsymbol{C} boldsymbol{H}_{2} boldsymbol{O} boldsymbol{H} ) What is a possible structural formula for ( X ? ) 1. ( boldsymbol{H} boldsymbol{O} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{O}_{2} boldsymbol{H} ) 2. ( boldsymbol{H} boldsymbol{O} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C H}(boldsymbol{O} boldsymbol{H}) boldsymbol{C H O} ) 3. ( boldsymbol{H} boldsymbol{O} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C O C H}_{2} boldsymbol{O H} ) A. 1,2 and 3 are correct B. 1 and 2 only are correct c. 2 and 3 only are correct D. 1 only is correct |
12 |
| 633 | An alkene ( Aleft(C_{10} H_{20}right) ) on oxidative ozonolysis yields two molecules of ( left(C_{5} H_{10} Oright) B . B ) on treatment with ( boldsymbol{L} boldsymbol{i} boldsymbol{A} boldsymbol{I} boldsymbol{H}_{4} ) yields ( mathbf{C}left(boldsymbol{C}_{5} boldsymbol{H}_{12} boldsymbol{O}right) ) which can’t be resolved into enantiomers. Which of following is correct? A. A: 3,4-diethyl-3-hexene B. B: 3-pentanone c. ( c: 3 ) -pentanol D. All of them are correct |
12 |
| 634 | Statement- ( mathrm{I}:left(boldsymbol{C} boldsymbol{H}_{3}right)_{3} boldsymbol{C} boldsymbol{C O C}left(boldsymbol{C H}_{3}right)_{3} ) and acetone can be distinguished by the reaction with ( N a H S O_{3} ) Statement- ( |: S O_{3}^{-2} ) is the nucleophile in bisulphate addition. |
12 |
| 635 | Pyruvic acid is obtained by: A. oxidation of acetaldehyde cyanohydrin B. oxidation of formaldehyde cyanohydrin c. oxidation of acetone cyanohydrin D. None of the above |
12 |
| 636 | Which among the following compounds is used as selective weed killer? A . Picric acid B. 2, 4-dichlorophenoxy acetic acid c. 2,4,6 -trichlorophenoxy acetic acid D. Salol |
12 |
| 637 | How many types of substituted alcohols (stereoisomers not considered) are possible in the given reaction? A. One B. Two c. Three D. Four |
12 |
| 638 | ( left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C H}-boldsymbol{C}- ) ( boldsymbol{C H}left(boldsymbol{C H}_{3}right)_{2} frac{left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C H} boldsymbol{M} boldsymbol{g} boldsymbol{B r}}{boldsymbol{H}_{3} boldsymbol{O}^{+}}[boldsymbol{N}]+[boldsymbol{O}] ) ( overbrace{H_{2} O}^{left(C H_{3}right)_{2} C H-L i}[mathrm{M}] ) Then [M] is: ( mathbf{A} cdot[mathrm{M}] ) is ( C H_{3}-C H=C H_{2} ) while ( [mathrm{N}] ) and ( [mathrm{O}] ) are ( left[left(C H_{3}right)_{2} C Hright]_{3} ) СОН апа ( C H_{3}-C H=C H_{2} ) B . ( [M] ) is ( left(C H_{3}right)_{2} C H-C H-C Hleft(C H_{3}right)_{2} ) while ( [N] ) and ( [O] operatorname{are}left(C H_{3}right)_{2} C H O H ) and ( C H_{3}-C H=C H_{2} ) c. ( [M] ) is ( left(C H_{3}right)_{2} C H-_{text {। }}^{C H}-C Hleft(C H_{3}right)_{2} ) while ( [N] ) and ( [O] operatorname{are}left(left(C H_{3}right)_{2} C Hright)_{3} C-O H ) and ( C H_{3}-C H=C H_{2} ) D – ( [M] ) is ( left[left(C H_{3}right)_{2} C Hright]_{3} C-O H ) while ( [N] ) and ( [O] ) are ( -S H ) ( left(C H_{3}right)_{2} C H-C H-C Hleft(C H_{3}right)_{2} ) and ( C H_{3} ) ( _{O H} ) ( C H_{2} ) |
12 |
| 639 | Above compound is hydrated maximum at which position? ( A ) B. 2 ( c .3 ) D. equal |
12 |
| 640 | In section ( A, ) there are some organic compounds and in section ( mathrm{B} ), their uses are mentioned. Match the correct options. Section A Section B 1. Ethanol (a) Nail polish remover 2. Formalin (b) To have sour taste in food 3. Acetone (c) In fragrant materials like perfumes 4. Ethanoic (d) To preserve dead bodies Acid ( A cdot(1-c),(2-d),(3-a),(4-b) ) B. (1-a), (2-d), (3-c), (4-b) C. ( (1-b),(2-a),(3-d),(4-c) ) D. (1-d), (2-c), (3-b), (4-a) |
12 |
| 641 | Chloroacetic acid is a stronger acid than acetic acid. Give one reason. | 12 |
| 642 | In the given transformation, which of the following is the most appropriate reagent? A. ( N H_{2} N H_{2}, O H ) в. ( Z n-H g / H C l ) c. ( N a, ) liq. ( N H_{3} ) D. ( N a B H_{4} ) |
12 |
| 643 | – 40 Match the reactions given in Column I with the suitable reagents give in Column II. Column 1 Column Il (Reactions) (Reagents) A. Benzophenone 1. LiAIHA Diphenylmethane B. Benzaldehyde → 2. DIBAL-H 1-phenylethanol C. Cyclohexanone Cyclohexanol 3. Zn |
12 |
| 644 | The compound ( X ) formed by the reaction of furfural ( Y ) with ethanol is : A. an aldol B. an acetal c. a ketal D. a hemiacetal |
12 |
| 645 | Consider the reactions. a) ( C H_{3}-C H=C H_{2} frac{(i) B H_{3} / T H F}{(i i) H_{2} O / O H} ) ( frac{P C C}{left(i n C H_{2} C l_{2}right)} B ) b) ( C H_{3}-C H=C H_{2} frac{(i) H g(O A c)_{2}}{(i i) N a B H_{4} bar{O} H} ) ( boldsymbol{C} frac{boldsymbol{P C C}}{left(boldsymbol{i n} C boldsymbol{H}_{2} C l_{2}right)} boldsymbol{D} ) Product B and D are: A. Functional isomers B. Positional isomeress c. chain isomeres D. Metamers |
12 |
| 646 | Arrange the following esters in increasing order of their ease of hydrolysis with suitable explanation. (a) Phenyl acetate (b) p-nitrophenyl acetate (c) p-methoxyphenyl (d) Tolyl acetate A ( . c<d<a<b ) B. ( b<a<d<c ) c. ( c<d<b<a ) D. None f these |
12 |
| 647 | Which of the following combination of reagents can bring the shown transformation? ( mathbf{A} cdot C H_{3} O N a, M g / )ether( , C O_{2}, H_{2} O / H^{+} ) в. ( C H_{3} ) ONa, ( K C N / D M S O, H_{2} O / H_{2} S O_{4}, ) heat ( mathbf{c} cdot M g / )ether( , C O_{2}, H_{2} O / H^{+}, C H_{3} O N a ) D. ( N a O H, M g / )ether( , C O_{2}, H_{2} O / H^{+}, C H_{3} I ) |
12 |
| 648 | The addition compound obtained by treating propanone with hydrogen cyanide is: A. propene cyanohydrin B. ethene cyanohydrin c. propane cyanohydrin D. ethane cyanohydrin |
12 |
| 649 | There is a large difference in the boiling points of butanal and butan-1-ol due to: A. intermolecular hydrogen bonding in butan-1ol B. intramolecular hydrogen bonding in butanal c. higher molecular mass of butan-1-ol D. resonance shown by butanal. |
12 |
| 650 | As the carbon chain increases in aldehyde and ketone compounds, solubility in water: A . decreases B. increases c. may increase D. may decrease |
12 |
| 651 | Assertion STATEMENT-1: m-Chlorobenzoicacid is a stronger acid than p-chlorobenzoic acid Reason STATEMENT-1: In m-chlorobenzoicacid, |
12 |
| 652 | Correct statement about products ( x ) and y is : A. Both gives Tollen’s test. B. Both gives Fehling test. C. Both gives 2, 4-DNP test. D. Oxygen atom present in both the products. |
12 |
| 653 | Identify ( A ) and ( B ) | 12 |
| 654 | Arrange the following compounds in the increasing order of their reactivity towards HCN. I. Acetaldehyde II. Acetone III. Methyl-tert-butyl ketone IV. Di-tert-butyl ketone A. III <II<IV < B. II ( |<|<mid V<| ) c. ( mid V<|<|<1 ) D. II<IV <I<III |
12 |
| 655 | The general formula for alcohol is: A. ( C_{n} H_{2 n}+1 O H ) в. ( C_{n} H_{2 n}+2 O H ) c. ( C_{n} H_{2 n}-2 O H ) D. ( C_{n} H_{2 n} ) |
12 |
| 656 | ( (boldsymbol{A}) boldsymbol{C}_{4} boldsymbol{H}_{6} frac{boldsymbol{H}_{2} / boldsymbol{P t}}{longrightarrow}(boldsymbol{B}) boldsymbol{C}_{4} boldsymbol{H}_{8} frac{boldsymbol{O}_{3} / boldsymbol{H}_{2} boldsymbol{O}}{_{boldsymbol{}}} ) ( boldsymbol{C H}_{3} boldsymbol{C O O H} ) Hence ( A ) and ( B ) are : A. ( C H_{3} C equiv C C H_{3}, C H_{3} C H=C H C H_{3} ) в. ( C H_{2}=C H C H_{3}=C H_{2}, C H_{3} C H=C H C H_{3} ) ( ^{c} cdot mid, mathrm{CH}_{3} mathrm{CH}=mathrm{CHCH}_{3} ) D. None of these |
12 |
| 657 | Identify the organic compound ( A ) which is widely used as a preservative in pickles and has a molecular formula ( C_{2} H_{4} O_{2} . ) This compound reacts with ethanol to form a sweet-smelling compound ( boldsymbol{B} ) |
12 |
| 658 | A student takes 2 mL acetic acid in a dry test tube and adds a pinch of sodium hydrogen carbonate to it. He makes the following observations: I. A colourless and odourless gas evolves with a brisk effervescence. II. The gas turns lime water milky when passed through it. III. The gas burns with an explosion when a burning splinter is brought near ¡t IV. The gas extinguishes the burning splinter that is brought near it. The correct observations are: A. ।, , I, and III B. II, III and IV c. ॥ा, Iv and । D. IV, I and II |
12 |
| 659 | t-buty ( mid-C=C H-C_{|}-O H ) can’t give decarboxylation while normally ( alpha-beta ) unsaturated acid give this reaction because: A. t-butyl gp, has large size and does not let the ( C O O H ) group to leave. B. t-butyl gp. can’t extract ( H ) from ( C O O H ) C. t-butyl gp. destabilise carbanion formed D. t-buty gp, does not allow this composition to convert to ( beta-gamma ) unsaturated acid |
12 |
| 660 | Write structure of Butane ( 1,4- ) dial. | 12 |
| 661 | What is the oxidation number of carbonyl carbon in acetophenone? ( A cdot+3 ) B. +1 ( c cdot+2 ) D. zero |
12 |
| 662 | The increasing order of acidic strength in the following acids. ( boldsymbol{C l C H}_{2} boldsymbol{C O O H}, boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C O O H}, boldsymbol{C l C} ) and ( C H_{3} C O O H ) is: A ( cdotleft(C H_{3}right)_{2} C H C O O H<C H_{3} C H_{2} C O O H< ) ( mathrm{ClCH}_{2} mathrm{CH}_{2} mathrm{COOH}<mathrm{CH}_{3} mathrm{COOH}<mathrm{ClCH}_{2} mathrm{COOH} ) в. ( C H_{3} C H_{2} C O O H<left(C H_{3}right)_{2} C H C O O H< ) ( mathrm{ClCH}_{2} mathrm{CH}_{2} mathrm{COOH}<mathrm{CH}_{3} mathrm{COOH}<mathrm{ClCH}_{2} mathrm{COOH} ) c. ( left(C H_{3}right)_{2} C H C O O H<C H_{3} C H_{2} ) СООН( < ) ( mathrm{ClCH}_{2} mathrm{CH}_{2} mathrm{COOH}<mathrm{ClCH}_{2} mathrm{COOH}<mathrm{CH}_{3} mathrm{COOH} ) D. ( left(C H_{3}right)_{2} C H C O O H<C l C H_{2} C H_{2} C O O H< ) ( C H_{3} C H_{2} C O O H<C H_{3} C O O H<C l C H_{2} C O O H ) |
12 |
| 663 | Among the following compounds, which one has maximum boiling point? A. n-butyl alcohol B. n-butyraldehdye c. diethyl ether D. Butanoic acid |
12 |
| 664 | 0 0 0 0 0 |
12 |
| 665 | Which of the following statements are correct? This question has multiple correct options A. Benzaldehyde reduces Fehling’s solution ( mathbf{B} cdot C_{6} H_{5} C H O+C_{6} H_{5} C H O stackrel{N a O H}{longrightarrow} C_{6} H_{5} C H= ) ( C H C_{6} H_{5}+O_{2} ) is a Claisen-Schmidt reaction. C ( cdot p K_{a} ) (formic acid) is less than ( p K_{a} ) (acetic acid) D. |
12 |
| 666 | What is the IUPAC name of the compound? |
12 |
| 667 | What happens when acetic acid is treated with ethanol in the presence of concentrated ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) ? Give the equation of the reaction |
12 |
| 668 | Question 9. Complete the following reaction sequence. CH3 CH CH (1) CH3MgBr → [A] (ii) H2O Na metal, [B] Ether CH3-Br br> [C] |
12 |
| 669 | 0.2 Which of the following compoun the following compounds is most reactive towards nucleophilic addition reactions? (a) CH3 -C-H (b) CH – – CHA -С-Н -&-CH₃NT |
12 |
| 670 | Predict product of the above given reaction: A . cyclohexene B. cyclohexanol c. cyclohexanone D. cyclohexane |
12 |
| 671 | Identify the position where electrophilic aromatic substitution(EAS) is most favourable. ( A cdot A ) B. B ( c cdot c ) D. A and C |
12 |
| 672 | If the products of ozonolysis are acetone and formaldehyde, what is the initial compound? ( A ) в. c. D. |
12 |
| 673 | Odd one out among the following is: A. Tartaric acid B. Oxalic acid c. Citric acid D. Prussic acid |
12 |
| 674 | Which of the following is not a good method to make ( 2,2- ) dimethylpropanoic acid? A ( cdotleft(C H_{3}right)_{3} C C H_{2} O H^{K_{2} C r_{2} O_{7}, H_{2} S O_{4}} ) B. ( left(C H_{3}right)_{3} C B r_{text {Diethylether }(i)} stackrel{M g}{stackrel{(i)}{H_{2} O}, H} ) ( ^{mathbf{c}} cdotleft(C H_{3}right)_{3} C B r stackrel{N a C N}{longrightarrow} frac{H_{3} bar{phi}}{H e a t} ) D. ( left(C H_{3}right)_{3} C C=C H stackrel{O_{3}}{longrightarrow} stackrel{O H_{2}}{longrightarrow} ) |
12 |
| 675 | The acid used in the making of vinegar is: A. formic acid B. acetic acid c. sulphuric acid D. nitric acid |
12 |
| 676 | ( 0-x y ) lene on ozonolysis will give : ( A ) ( mathrm{CHO} ) ( mathrm{I}_{mathrm{CHO}}^{mathrm{O}} mathrm{CH}_{3}-mathrm{C}-mathrm{CHO} ) ( mathrm{NH} ) в. ( begin{array}{l}mathrm{CH}_{3}-mathrm{C}=mathrm{O} quad mathrm{O} \ mathrm{CH}_{3}-mathrm{C}=mathrm{O}end{array} & mathrm{CH}_{3}-mathrm{C}-mathrm{CHO} ) c. ( mathrm{CH}_{3}-mathrm{C}=mathrm{O} ) ( mathrm{CH}_{3}-mathrm{C}=mathrm{O} )( & mathrm{CHO} ) ( mathrm{CHO} ) ( D ) ( mathrm{CH}_{3}-mathrm{C}=mathrm{O} quad ) II ( mathrm{CH}_{3}-mathrm{C}=mathrm{O}, mathrm{CH}_{3}-mathrm{C}-mathrm{CHO} & underset{mathrm{CHO}}{mathrm{I}} ) |
12 |
| 677 | tood yo |
12 |
| 678 | Consider the following compounds, The correct order towards electrophilic substitution reaction is : ( A cdot(text { iv })>(text { iii })>(text { ii })>(i) ) B. (i)> (ii) > (iii) > (iv) ( c cdot(text { iv })>(text { iii })>(i)>(text { ii }) ) D. (iii) > (iv) > (i) > (ii) |
12 |
| 679 | Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is: A. ( C H_{3} C O O C H_{3} ) в. ( C H_{3} C O N H_{2} ) с. ( C H_{3} ) СООСОСН( _{3} ) D. ( C H_{3} C O C l ) |
12 |
| 680 | ( boldsymbol{C H}_{3}-boldsymbol{C} equiv boldsymbol{C H}+boldsymbol{H}_{2} boldsymbol{O} frac{boldsymbol{H} boldsymbol{g} boldsymbol{S O}_{4}}{boldsymbol{H}_{2} boldsymbol{S O}_{4}}(boldsymbol{A}) ) The product ( A ) in above reaction is: A. propanal B. propanone c. propene D. both (a) and (b) |
12 |
| 681 | Which of the following will form lactone on treatment with NaOH? A. ( alpha- ) Bromo acid B. ( beta- ) Bromo acid c. ( beta ) – Hydroxy acid D. ( delta- ) Bromo acid |
12 |
| 682 | Question 8. Which acid of each pair shown here would you expect to be stronger? (i) CH3COOH or CH FCOOH (ii) CHFCOOH or CH,CICOOH (iii) CH FCH2CH2COOH or CH3CHFCH2COOH (iv) F3C COOH or H3C COOH Wher rocance of an electron withdrawing group like F(-1 showing group) |
12 |
| 683 | Which of the following cyanohydrins on hydrolysis give an optically active acid giving iodoform reaction? A. Acetone cyanohydrin B. Propionaldehyde cyanohydrin c. Acetaldehyde cyanohydrin D. Formaldehyde cyanohydrin |
12 |
| 684 | The given conversion can be carried out by which process? ( (mathrm{A}) ) ( mathbf{A} cdot i . H B r+ ) peroxide ( i i . M e_{3} C^{ominus}, Delta i i i . O_{3} / H_{2} O ) B. i.H Br in. ( C_{2} H_{5} O^{ominus}, Delta ) iii. ( O_{3} / H_{2} O ) C ( . ) i.H I i i. ( M e O^{ominus}, Delta ) ii ( . O_{3} / Z n- ) acid D. ( H C l+ ) peroxide |
12 |
| 685 | IUPAC naming of the compound is: A. 3-octanoic acid B. octane-3-oic acid c. 2-ethylhexanoic acid D. 3-ethylhexanoic acid |
12 |
| 686 | Which of the following statements is/are correct? This question has multiple correct options A. Methane was named as fire damp as it forms explosive mixture with air B. Primary suffixes are added to the root word to show saturation or unsaturation in a C atom C. The IUPAC name of valerie acid is pentanoic acid D. The common name of hexanoic acid is caproic acid |
12 |
| 687 | The IUPAC name of the given structure is: |
12 |
| 688 | Acetaldehyde on treatment with aluminium ethoxide gives: A. ethyl methanoate B. ethyl acetate c. ethyl propionate D. ethyl formate |
12 |
| 689 | Ethyl alcohol to trichloroacetic acid | 12 |
| 690 | Which of the following is not correct? A. Acidic hydrolysis of ester is reversible B. Hydrolysis of ester becomes faster after sometime due to the formation of ( C H_{3} C O O H ) C ( . H^{+} ) formed during hydrolysis acts as autocatalyst D. Alkaline hydrolysis of ester is reversible |
12 |
| 691 | toppr 5 Q Type your question ( B ) ( mathbf{C} ) ( D ) |
12 |
| 692 | ( mathbf{2} boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C O C H}_{3} stackrel{d r y H C l}{rightarrow} ) ‘X’. ( mathbf{X} ) is A. Mesityl oxide B. Diacetone alcohol c. Acetic acid D. Mesitylene |
12 |
| 693 | Statement: One mole of propyne reacts with ( B_{2} H_{6} / H_{2} O_{2} / O H ) to produce acetone. If the given statement is true the enter 1 else enter 0 |
12 |
| 694 | The mixture of colourless gases is: A ( cdot C O_{2} ) в. ( C O ) ( c cdot c o_{2}+c O ) D. ( C O_{2}+C O+H_{2} O ) |
12 |
| 695 | What are acetals and hemiacetals? | 12 |
| 696 | Consider the reaction: ( boldsymbol{R} boldsymbol{C H O}+boldsymbol{N H}_{2} boldsymbol{N} boldsymbol{H}_{2} rightarrow boldsymbol{R C H}=boldsymbol{N} ) ( N H_{2} ) What sort of reaction is it? A. Free radical addition-elimination reaction B. Electrophilic substitution-elimination reaction c. Nucleophilic addition-elimination reaction D. Electrophilic addition-elimination reaction |
12 |
| 697 | Which one of the following undergoes reaction with ( 50 % ) sodium hydroxide solution to give the corresponding alcohol and acid? A. Phenol B. Benzaldehyde c. Butanal D. Benzoic acid |
12 |
| 698 | In the following sequence of reactions Toluene ( frac{K M n O_{4}}{longrightarrow} A frac{S O C l_{2}}{B G O_{4}} B frac{H_{2} / P d}{C} C ) then product ( boldsymbol{C} ) is: A ( cdot C_{6} H_{5} ) СООН в. ( C_{6} H_{5} C H_{3} ) ( mathrm{c} cdot C_{6} H_{5} C H_{2} O H ) D. ( C_{6} H_{5} C H O ) |
12 |
| 699 | Acetal or ketal is: A. Vic dialkoxy compound B. ( alpha, omega ) – dialkoxy compound C. ( alpha ) -alkoxy alcohol D. Gem dialkoxy compound |
12 |
| 700 | (B) ( overbrace{operatorname{Ph} C H}^{N a B H_{4}} operatorname{CH} ) ( boldsymbol{C H O} frac{1 . L A H, text { ether }}{2 . H_{3} O^{+}}(A) ) The products ( (A) ) and (B) are: ( A ) ( A ) в. ( c ) D. |
12 |
| 701 | The molecular formula of the compound which gives two moles of acetone during ozonolysis: A. ( C_{2} H_{4} ) в. ( C_{3} H_{6} ) ( mathbf{c} cdot C_{4} H_{8} ) D. ( C_{6} H_{12} ) |
12 |
| 702 | In the reaction, the product ( (X) ) is: ( mathbf{A} ) ( B ) ( mathbf{C} ) ( D ) |
12 |
| 703 | IUPAC name of the compound is: A. 3,4 -Dihydroxybenzoic acid B. 4,5-dihydroxybenzoic acid c. 2,3-dihydroxybenzoic acid D. none of these |
12 |
| 704 | Which of the following acids dissociates to the greatest extent in a aqueous solution? A. Trichloroacetic acid B. Acetic acid c. chloroacetic acid D. Dichloroacetic acid |
12 |
| 705 | Acetyl chloride cannot be obtained from acetic acid with A ( cdot P C l_{3} ) в. ( P C l_{5} ) c. ( operatorname{sOCl}_{2} ) D. ( S_{2} C l_{2} ) |
12 |
| 706 | Q. 33 Identify the compounds A, B and C in the following reaction. CH3 – Br Mg/ether (1) CO2 CH2OH/H+ [C] A 11) Water (B) CH₂OH ne Completa chemical cooroon |
12 |
| 707 | Which of the following correctly describes meta-formaldehyde? A. It is a dimer of HCHO B. It is a trimer of formaldehyde. c. It is a tetramer of formaldehyde. D. It is a polymer in which number of HCHO unit is more than 100 |
12 |
| 708 | The decreasing order of acidic character of the following is: (I) ( E t O H ) (II) ( M e- ) COOH (III) ( M e O O C-C H_{2}-C O O M e ) A ( . I>I I I>I V>I ) B. ( I I>I I I>I>I V ) c. ( I>I V>I I I>I I ) D. ( I V>I>I I I>I I ) |
12 |
| 709 | Suggest reaction mechanisms for the formation of given product. |
12 |
| 710 | An organic compound containing ( – ) COOH functional group is called: A. aldehyde B. ketone c. amide D. carboxylic acid |
12 |
| 711 | Sodium benzoate has it’s application in: This question has multiple correct options A. food preservation B. pharmacy c. fireworks D. fuel in whistle mix |
12 |
| 712 | Which of the following statement(s) is/are affect the stability of hydrates of carbonyl compounds? This question has multiple correct options A. Steric hindrance B. Presence of -I groups on carbonyl carbon’s hydrate c. Intramolcular hydrogen bonding D. Angle strain in carbonyl compound |
12 |
| 713 | The smallest ketone and its next homologue are reacted with ( N H_{2} O H ) to form: A. two different oxime B. four different oxime C. three different oxime D. optically active oxime |
12 |
| 714 | A keto ester (X) with molecular formula ( C_{6} H_{10} O_{3} ) on treatment with ( mathrm{NaOH} ) and ( I_{2} ) does not give iodoform but on boiling with dilute KOH gives a compound (Y) with molecular formula ( C_{4} H_{5} O_{3} K ) which upon acidification followed by heating undergoes decarboxylation to give acetone. The keto ester (X) is? A. ( C H_{3} C O C H_{2} C H_{2} C O O C H_{3} ) в. ( C H_{3} C O C H_{2} C O O C_{2} H_{5} ) c. ( C H_{3} C H_{2} O C H_{2} ) СООСН( _{3} ) D. ( C H_{3} C O C Hleft(C H_{3}right) C O O C H_{3} ) |
12 |
| 715 | Question 4. Arrange the following in decreasing order of their a: strength and give reason for your answer. CH3CH2OH; CH3COOH. CICH,COOH; FCH2COOH; C,HCH2COOH. |
12 |
| 716 | Most acidic hydrogen is present in : ( A ) B. c. ( left(C H_{3} C Oright)_{3} C H ) D. ( left(C H_{3}right)_{3} C O H ) |
12 |
| 717 | On vigorous oxidation by permanganate solution ( left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C}=boldsymbol{C H}-boldsymbol{C H}_{2} boldsymbol{C H O} ) gives: A ( cdotleft(C H_{3}right)_{2} C O ) and ( O H C-C H_{2}-C H O ) в. ( left(C H_{3}right)_{3} C O H ) and ( H C H O O ) c. ( left(C H_{3}right)_{2} C O ) and ( O H C-C H_{2}-C O O H ) D. ( left(C H_{3}right)_{2} C O ) and ( C H_{2}(C O O H)_{2} ) |
12 |
| 718 | H,O, H2SO4 / HgSO4 208. Q C=CH D,O, DSO/ HgSO4 BHz/THF H,O/OH R P, Q and R respectively are: ÇCHD, accH, OCH CHO CCH, -CH,CHO (X) (a) X, Y, and Z (b) Y, X and Z (c) Y in all cases (d) Z in all cases |
12 |
| 719 | Acetone ( left(C H_{3} C O C H_{3}right) ) is the major product in: ( boldsymbol{I} . boldsymbol{C H}_{2}=boldsymbol{C}=boldsymbol{C H}_{2} stackrel{boldsymbol{H}_{3} boldsymbol{O}^{+}}{longrightarrow} ) ( boldsymbol{I I} cdot boldsymbol{C H}_{3} boldsymbol{C} equiv boldsymbol{C H} frac{boldsymbol{H}_{2} boldsymbol{S O}_{4} / boldsymbol{H} boldsymbol{g} boldsymbol{S O}_{4} / boldsymbol{H}_{2} boldsymbol{O}}{longrightarrow} ) IIII. ( C H_{3} C equiv C H frac{B H_{3} . T H F}{H_{2} O_{2} / O H^{-}} ) This question has multiple correct options A . ( I ) в. ( I I ) c. ( I I I ) D. none of the above |
12 |
| 720 | Explain the following with one example (a) Aldol condensation (b) Cannizzaro reaction (c) Esterification (d) Decarboxylation |
12 |
| 721 | Write IUPAC names of the products obtained by the ozonolysis of the pent-2- ene? A. Ethanal and propanal B. Only Ethanal c. only propanal D. Ethanol and propanone |
12 |
| 722 | Compound (A) is: ( mathbf{A} ) [ C H_{3}-underset{_{C H_{3}}^{mid}}{C}^{text {сснз }}-C H_{2} C H_{2} B r ] В. ( C H_{3}-begin{array}{c}C H-C H-C H_{2} B r \ _{I H_{3}}^{mid}end{array} ) D. [ C H_{3}-underbrace{C}_{C H_{3}}^{text {СС }}-C_{text {। }} H-C H_{3} ] |
12 |
| 723 | The correct increasing order of the acidic strength of acids, butyric acid (I), ( 2- ) chlorobutyric acid ( (|), 3 ) chlorobutyric acid (III) and 2, 2dichlorobutyric acid (IV) is : ( A cdot|<||<|||<mid V ) B. III <II IV <1 c. ( |<|||<||<mid V ) D. ||( <1<|<mathbb{V} ) E. IV ( <|1<|<1 ) |
12 |
| 724 | Which is the final product obtained by the reaction of a grignard reagent ethyl magnesium bromide with propanone? A. Pentane-1-ol B. 2-Methyl-butan-2-ol c. Pentane-2-ol D. 3-Methyl-butane-2-ol |
12 |
| 725 | ( boldsymbol{P} frac{1 . C H_{3} M g B r}{2 . H_{3} O^{+}} R frac{1 . d i l . N a O H}{2 . Delta} 4 ) methylpent-3-en-2-one ( boldsymbol{P} ) is : A. ethanamine B. ethanal c. propanone D. ethanenitrile |
12 |
| 726 | Match the compounds in column I with their characteristics/test(s)/reagents(s)/ste reochemistry given in column II Matching can be one or more than one. |
12 |
| 727 | The IUPAC name of the following compound is 4 -(ethoxycarbonyl) benzoic acid. A . True B. False |
12 |
| 728 | 224. The reaction of benzene with CO and HCl in the presence of anhydrous Alci, gives (a) Chlorobenzene (b) Toluene (c) Benzyl chloride (d) Benzaldehyde |
12 |
| 729 | Both the organic compounds A and B can release hydrogen with Na. Only compound A can form a salt with NaOH, whereas B cannot.When A reacts with B in the presence of conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4}, ) a pleasant smelling compound is formed. The pair of compounds ( A ) and ( B ) can be respectively: A ( cdot C_{2} H_{5} O H ) and ( C_{2} H_{2} ) в. ( C H_{3} C O O H ) and ( C_{2} H_{2} ) c. ( C H_{3} C O O H ) and ( C_{2} H_{5} O H ) D. ( C_{2} H_{5} O H ) and ( C H_{3} C O O H ) |
12 |
| 730 | Question 12. When liquid ‘A’ is treated with a freshly prepared ammoniacal silver nitrate solution, it gives bright silver mirror. The liquid forms a white crystalline solid on treatment with sodium hydrogen sulphite. Liquid ‘B’ also forms a white crystalline solid with sodium hydrogen sulphite but it does not give test with ammoniacal silver nitrate. Which of the two liquids is aldehyde? Write the chemical equations of these reactions also. |
12 |
| 731 | Which of the following acids have the lowest ( p K_{a} ) value? ( A ) ( C l ) [ begin{array}{c} mid \ C H_{3}-C H-C O O H end{array} ] в. ( C l-C H_{2}-C H_{2}-C O O H ) c. ( C C l_{3} ) СООН D. ( C H C l_{2} C O O H ) |
12 |
| 732 | Which of the following are bidentate monoanion ligands? (1)Acetylacetonato (2) Oxalato ion (3) Dimethylglyoximato Select the correct answer using the codes given below: A. 1 only B. 1 and 3 only c. 3 only D. 2 and 3 only |
12 |
| 733 | 0.21 Give the IUPAC names of the following compounds. CH=CH-CHO CHO (b) (c) CH – CH2–C–CH2–CHO (d) CH-CH=CH-CHO O Collana |
12 |
| 734 | How many group are ( o / p ) director in the electrophilic aromatic substitution? | 12 |
| 735 | The IUPAC name of compound is: A. Butan-2-aldehyde B. 2-Methyl-butanal c. 3-Methyl-butanal D. 2-Ethylpropanal |
12 |
| 736 | Acetic acid reacts with ethanol in the presence of ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) to form ( boldsymbol{X} ) and water. Which of the following is ( X ? ) A. ( C H_{3} C H_{2} C O O C_{2} H_{5} ) в. ( C H_{3} ) СОСН( _{3} ) c. ( C H_{3} C O C_{2} H_{5} ) D. ( C H_{3} C O O C_{2} H_{5} ) |
12 |
| 737 | The percentage of formaldehyde in formalin is: A . ( 40 % ) B. 30% c. ( 20 % ) D. 10% |
12 |
| 738 | А. Match the acids given in Column I with their correct IUPAC names given in Column II. Column Column II (Acids) (IUPAC names) Phthalic acid 1. Hexane-1,6-dioic acid B. Oxalic acid 2. Benzene-1, 2-dicarboxylic acid Succinic acid 3. Pentane-1,5-dioic acid Adipic acid 4. Butane-1,4-diolc acid Ε Glutaric acid 5. Ethane-1, 2-dloic acid |
12 |
| 739 | IdenLıly LIIe producl. ( mathbf{A} ) ( B ) ( C ) ( D ) |
12 |
| 740 | ( (a) C H_{3} C O N H_{2}+K O H longrightarrow ) ( (b) C H_{3} C O O H+s o d a l i m e longrightarrow ) ( (c) C H_{3} C O O A g+B r_{2} longrightarrow ) All the three reactions show similarity in: A. Descending of carbon atoms B. Ascending of carbon atoms c. Both the above D. None of above |
12 |
| 741 | Which of the following is true statement? A. The boiling point of aldehydes and ketones is higher than less polar ethers and non polar hydrocarbons of comparable molecular masses. B. The boiling point of aldehydes and ketones is higher than less polar ethers but lower boiling points than non polar hydrocarbons of comparable molecular masses. C. The boiling point of aldehydes and ketones is lower than less polar ethers but higher boiling points than non polar hydrocarbons of comparable molecular masses. D. The boiling point of aldehydes and ketones is lower than less polar ethers and non polar hydrocarbons of comparable molecular masses. |
12 |
| 742 | When acetone is condensed into a ketol the reagent used is : ( mathbf{A} cdot B a(O H)_{2} ) в. ( N a H C O_{3} ) c. ( B r_{2} ) water D. ( C l_{2} ) |
12 |
| 743 | Find out the major product of the reaction. |
12 |
| 744 | In the following pair which is more acidic? ( mathbf{C H}_{2} mathbf{F C H}_{2} mathbf{C O}_{2} mathbf{H}, mathbf{C H}_{3} mathbf{C H M F C H C O}_{2} mathbf{H} ) |
12 |
| 745 | In the given reaction: ( [X] ) will be : A. Only syn oxime B. Only anti oxime ( c . ) mixture of syn and anti oxime D. secondary amide |
12 |
| 746 | ( boldsymbol{C H}_{3} boldsymbol{C H O}+boldsymbol{H C H O} frac{boldsymbol{H e a t}}{text {Dil. } boldsymbol{N a O H}} ) ( boldsymbol{A} frac{boldsymbol{H}_{3} boldsymbol{O}^{+}}{boldsymbol{H} C N} boldsymbol{B} ) The structure of compound ( B ) is : ( mathbf{A} cdot C H_{3}-C H-C O O H ) ( _{O H} ) в. ( C H_{2}=C H-underset{I N}{_{I}} begin{array}{c}C H-O H \ end{array} ) с. ( C H_{3} C H_{2}-C H-C O O H ) он D. ( C H_{2}=C H-C H-C O O H ) o ( _{H} ) |
12 |
| 747 | Identify the substance underlined, in each of the following cases: An organic compound containing COOH functional group. |
12 |
| 748 | Which of the following is used as an acid bath in dyeing cotton and wool? A. Methanoic acid B. Acetic acid c. Benzoic acid D. Sulphuric acid |
12 |
| 749 | In the reaction ( x ) and ( y ) are: ( mathbf{A} cdot x=H_{2} cdot P d / B a S O_{4} ; y=N a O A c, A c_{2} O ) B ( cdot x=L i A l H_{4} ; y=N a O A c, A c_{2} O ) C ( cdot x=H_{2}, P d / C ; y=N a O H, A c_{2} O ) ( mathbf{D} cdot x=L i A l H_{4} ; y=N a O H, A c_{2} O ) |
12 |
| 750 | What is the common name of ( boldsymbol{C} boldsymbol{H}_{2}= ) CHCOOH? A. Anthranilic acid B. Citric acid c. Acrylic acid D. Propenoic acid |
12 |
| 751 | Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is: A. hydrocyanic acid B. sodium hydrogen sulphite c. a Grignard reagent D. hydrazine in presence of feebly acidic solution |
12 |
| 752 | Ortho-xylene on ozonolysis followed by reductive hydrolysis gives: A. ( C H O-C H O ) and ( C H_{3}-C O O H ) в. ( C H_{3}-C O-C O-C H_{3}, C H O-C H O ) and ( C H_{3}- ) ( C O-C H O ) c. ( C H_{3}-C O-C O-C H_{3} ) and ( C H O-C H O ) D. ( C H_{3}-C O-C O-C H_{3}, C H_{3}-C O-C H O ) and ( C H O-C H O ) |
12 |
| 753 | ( frac{1}{8}=frac{-}{2} ) ( frac{j}{delta} ) ( delta ) |
12 |
| 754 | The reactant ( X & Y ) of following reactions are: ( mathbf{A} ) B. ( c ) D. |
12 |
| 755 | Ketones reacts with Mg – Hg over water and give: A. Alcohols B. pinacolones c. pinacols D. none of these |
12 |
| 756 | Compound ( Aleft(C_{7} H_{13} B rright) ) is a tertiary bromide. On treatment with sodium ethoxide in ethanol, ( A ) is convert into ( B ) ( left(C_{7} H_{12}right) . ) Ozonolysis of ( B ) gives ( C ) as the only product. A and B are: A . A: 1-bromo 1-methylcyclohexane; B:1-methy cyclohexene B. A: 1-bromo 2-methylcyclohexane; B: 3-methyl cyclohexene c. A: 1-bromo 1-methylcyclohexane; B methylenecyclohexane D. None of these |
12 |
| 757 | Identify correct order of reactivity for electrophilic substitution reaction of the following compounds: ( A ) в. ( c ) D. |
12 |
| 758 | Identify (A) To (C) | 12 |
| 759 | Give plausible explanation for each of the following: (i) Cyclohexanone forms cyanohydrin in good yield but 2,2,6 trimethylcyclohexanone does not. (ii) There are two ( N H_{2} ) groups in semicarbazide. However, only one is involved in the formation of semicarbazones. (iii) During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, the water or the ester should be removed as soon as it is formed. |
12 |
| 760 | Which of the following statements is/are correct? This question has multiple correct options A. ( 4- ) Chlorophenol ( (I) ) will dissolve in ( N a O H ) but ( 4- ) chloro ( -1- ) methyl benzene (II) will not. B. ( 4- ) Methylbenzoic ( (I I I) ) acid will dissolve in aq.NaHCO( _{3} ) ) but ( 4- ) methylphenol(( I V ) ) will not. C ( .2,4,6- ) Trinitrophenol ( (V) ) will dissolve in aq.NaHCO( _{3} ) ) but ( 4- ) methylphenol ( (V I) ) will not D. ( 4- ) Ethylphenol ( (V I I) ) will dissolve in aq. ( N a O H ) but ethyl phenyl ether ( (V I I) ) will not. |
12 |
| 761 | ( (boldsymbol{A})left(boldsymbol{C}_{10} boldsymbol{H}_{6}right) frac{text {Reductiveoroxidative}}{text {ozonolysis}} ) ( (B)left(C_{5} H_{8} Oright) ) (A) reacts with one equivalent of ( boldsymbol{H}_{2} / mathrm{Pd} ) Give all the possible structures of ( (A) ) and (B) if : Both (A) and (B) are resolvable. |
12 |
| 762 | Write the IUPAC name of ( left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C H C H O} ) |
12 |
| 763 | Which of the following is not a spontaneous reaction ( i e, ) has equilibrium constant ( (K) ) less than one? This question has multiple correct options ( A ) [ mathrm{CH}_{3}-mathrm{C}=mathrm{CH}+mathrm{CH}_{3} mathrm{Li} rightleftharpoons mathrm{CH}_{3}-mathrm{C}=mathrm{CLi}+mathrm{CH}_{4} ] в. [ begin{array}{l} mathrm{CH}_{3}-mathrm{C} equiv mathrm{CH}+mathrm{CH}_{3} mathrm{CH}_{3} mathrm{ONa}= \ mathrm{CH}_{3}-mathrm{C} equiv mathrm{CNa}+mathrm{C}_{2} mathrm{H}_{5} mathrm{OH} end{array} ] ( c ) [ mathrm{CH}_{3} mathrm{COOH}+mathrm{CH}_{3}-mathrm{C} equiv mathrm{CNa} rightleftharpoons ] [ mathrm{CH}_{3} mathrm{COONa}+mathrm{CH}_{3}-mathrm{C}=mathrm{CH} ] ( D ) [ begin{array}{l} mathrm{CH}_{3} mathrm{CH}=mathrm{CH}_{2}+mathrm{CH}_{3}-mathrm{C}=mathrm{CNa} rightleftharpoons \ mathrm{CH}_{3} mathrm{CH}=mathrm{CHNa}+mathrm{CH}_{3}-mathrm{C}=mathrm{CH} end{array} ] |
12 |
| 764 | ( alpha ) -Hydroxypropanoic acid can be prepared from ethanal by following the steps given in the sequence. A. Treat with ( H C N ) followed by acidic hydrolysis B. Treat with ( N a H S O_{4} ) followed by reaction with ( N a_{2} C O_{3} ) c. Treat with ( H_{2} S O_{4} ) followed by hydrolysis D. Treat with ( K_{2} C r_{2} O_{7} ) in presence of sulphuric acid |
12 |
| 765 | Ethanoic acid is obtained by the ( ldots . . ) of ethanol A. Combustion B. Oxidation c. Reduction D. Subsitution |
12 |
| 766 | An organic compound with molecular formula ( C_{9} H_{10} O ) forms 2,4 -DNP derivative, reduces Tollen’s reagent and undergoes Cannizaro reaction. On vigorous oxidation it gives a dicarboxylic acid which is used in the preparation of terylene. Identify the organic compound. |
12 |
| 767 | The correct order of acidities of the following is : A. III>IV > || > | B. IV>|||>|>1| c. ( ||>|>|>mid V ) D. ॥> ||| > IV > |
12 |
| 768 | Product ( (A) ) is? ( A ) ( B ) ( c ) ( D ) |
12 |
| 769 | What are ( N ) and ( M ? ) products ( A cdot 6,6 ) B. 6,4 ( c cdot 4,4 ) ( D cdot 3,3 ) |
12 |
| 770 | Among the following compounds, the most acidic is : A. p-nitrophenol B. p-hydroxybenzoic acid c. o-hydroxybenzene acid D. p-toluic acid |
12 |
| 771 | COOK Electrolysis 163. .. The product is: COOⓇK |
12 |
| 772 | Formaldehyde is used as formalin in industries: A. to preserve biological specimens B. to prepare bakelite c. both ( A ) and ( B ) D. none of these |
12 |
| 773 | ( boldsymbol{C H}_{3} boldsymbol{M} boldsymbol{g} boldsymbol{B r}+boldsymbol{C O}_{2} stackrel{text {Dryether}}{longrightarrow} boldsymbol{Y} frac{boldsymbol{H}_{3} boldsymbol{O}^{oplus}}{longrightarrow} ) ( Z ) What is product ( z ) in the given reaction? A. Ethyl acetate B. Acetic acid c. Propanoic acid D. Methyl acetate |
12 |
| 774 | ( boldsymbol{C H}_{3} boldsymbol{O H} frac{(i) boldsymbol{X}}{(i i) R boldsymbol{h}, boldsymbol{Delta}} boldsymbol{C H}_{3} boldsymbol{C O O H} ) In the above reaction, ( boldsymbol{X} ) is : A ( . C O_{2} ) в. ( C O ) с. ( M g O ) D. ( C ) |
12 |
| 775 | In the following reaction ( boldsymbol{C H}_{3} boldsymbol{C H O}+boldsymbol{N H}_{2} cdot boldsymbol{N} boldsymbol{H}_{2} rightarrow boldsymbol{A} stackrel{boldsymbol{B}}{longrightarrow} ) ( boldsymbol{C H}_{3} boldsymbol{C H}_{3}+boldsymbol{N}_{2} ) Identify ( A ) and ( B ) A. ( C H_{3} C H=N N H_{2} ) and ( C_{2} H_{5} O N a ) B. ( C H_{3} C H_{2}-N H_{2} ) and ( C_{2} H_{5} O N a ) c. ( C H_{3}-N H-N H-C H_{3} ) and ( C_{2} H_{5} O H ) D. ( C H_{3} C H_{2} N H_{2} ) and ( C_{2} H_{5} O H ) |
12 |
| 776 | ( x^{2} ) ( d x ) ( d x ) |
12 |
| 777 | Write the structure of a nitrolic acid. | 12 |
| 778 | Why is alpha ( ( alpha ) ) hydrogen of carbony compounds acidic in nature? | 12 |
| 779 | Manufacture of nylon- 6,6 uses: A. hexanoic acid B. pentanoic acid c. hexanedioic acid D. acetic acid |
12 |
| 780 | ( boldsymbol{C}_{6} boldsymbol{H}_{5} boldsymbol{C} boldsymbol{H}_{3}-frac{C r boldsymbol{O}_{2} C l_{2}}{longrightarrow} boldsymbol{Z} ) In the given sequence, ( Z ) is: A. Benzaldehyde B. Toluic acid c. Phenul acetic acid D. Benzoic acid |
12 |
| 781 | How will you convert Benzene to Benzoic acid? |
12 |
| 782 | For which functional derivative of carboxylic acids,acidic hydrolysis is avoided? A. Acid chlorides B. Acid amides c. Acid anhydrides D. Esters |
12 |
| 783 | ( mathrm{CH}_{3} mathrm{COCl}+mathrm{H}_{2} stackrel{(A)}{longrightarrow}(mathrm{B}) ) The given reaction is an example of Rosenmund’s reaction. Identify the product ( mathbf{B} ) A. Formaldehyde B. cloroethane c. Acetaldehyde D. Ethanol |
12 |
| 784 | The given structure represents bondline formula of Heptan-4-one. Is it True or False. A. True B. False |
12 |
| 785 | In the Rosenmund’s reaction, ( boldsymbol{R} boldsymbol{C O C l}+boldsymbol{H}_{2} frac{boldsymbol{P d} / boldsymbol{B a S O}_{4}}{boldsymbol{P} boldsymbol{R} boldsymbol{H} boldsymbol{O}+} ) ( boldsymbol{H} boldsymbol{C l} ) Here ( boldsymbol{B a S O}_{4} ) A. promotes catalytic activity of ( P d ) B. removes the ( H C l ) formed in the reaction c. deactivates palladium D. activates palladium |
12 |
| 786 | A strong base can abstract an ( alpha ) hydrogen from : A . amine B. alkene c. alkane D. ketone |
12 |
| 787 | Arrange the following in order of increasing acid strength. ( boldsymbol{C H}_{3} boldsymbol{C H} 2 boldsymbol{C H B r C O O H} ; boldsymbol{C H}_{3} boldsymbol{C H B r C} ) |
12 |
| 788 | In the manufacture of acetic acid from aerial oxidation of acetaldehyde, the catalyst used is : A . acidified ( K_{2} C r_{2} O_{7} ) в. ( left(C H_{3} C O Oright)_{2} M n ) ( mathrm{c} cdot mathrm{HgSO}_{4} ) D. ( N i ) |
12 |
| 789 | toppr Q Type your question 4 ( B ) ( c ) ( D ) |
12 |
| 790 | The correct set of reagents for the following conversion is : ( mathbf{A} cdot P_{2} O_{5} / Delta, P_{4} / I_{2}, N a ) ( mathbf{B} cdot P_{4} / I_{2}, N a, P_{2} O_{5} / Delta ) ( mathbf{c} cdot P_{2} O_{5}, N a B H_{4} ) D. ( P_{4} / I_{2}, ) Na, conc. ( H_{2} S O_{4} ) |
12 |
| 791 | The correct representation of 4 hydroxy- 2 -methylpent-2-en-1-al is: ( mathbf{A} cdot C H_{3}-C H-C H=C-C H O ) ( O_{H} ) ( begin{array}{rl}mathbf{B} cdot C H_{3}-C H-C H= & C-C H O \ C H_{3} & O_{H}end{array} ) ( c ) ( C H ) : 3. ( C H_{3}-C_{C H_{3}}-C H=C_{C H_{3}}-C H O ) ( mathbf{D} cdot C H_{3}-C H-C H_{2}-C H-C H O ) ( O_{H}^{mid} C H_{3} ) |
12 |
| 792 | Give the decreasing order of nucleophilic addition reaction of the following: (i) ( boldsymbol{H} boldsymbol{C} boldsymbol{H} boldsymbol{O} ) PhCHO (iii) Chloral ( left(mathbf{C l}_{3} mathbf{C}-mathbf{C H}=mathbf{O}right) ) Acetophenone A ( .(i i i)>(i)>(i i)>(i v) ) B. ( (i v)>(i i)>(i)>(i i i) ) C. ( (i)>(i i i)>(i i)>(i v) ) D. ( (i i i)>(i)>(i v)>(i i) ) |
12 |
| 793 | Structure of ethanoic acid is: A ( cdot C H_{3}-C H_{2}-C H_{3} ) в. ( C H_{3}-C-O H ) ॥ О c. ( C H_{3}-O-C_{3} H_{7} ) D. ( C H_{3}-C-C H_{3} ) I O E ( cdot C H_{3}-C H_{2}-N H_{2} ) |
12 |
| 794 | Write the main product formed when propanal reacts with the following reagents: (i) 2 moles of ( C H_{3} O H ) in presence of dry ( boldsymbol{H} boldsymbol{C l} ) (ii) Dilute ( N a O H ) (iii) ( H_{2} N-N H_{2} ) followed by heating with ( K O H ) in ethylene glycol |
12 |
| 795 | ( boldsymbol{C}_{6} boldsymbol{H}_{5} boldsymbol{C O O H}+boldsymbol{C H}_{3} boldsymbol{M} boldsymbol{g} boldsymbol{I} rightarrow ? ) ( mathbf{A} cdot C_{6} H_{5} C O O M g I ) в. ( C H_{4} ) c. Both a and ( b ) D. none |
12 |
| 796 | Write the correct order of acidity: A. ( P>Q>R>S ) в. ( Q>P>R>S ) c. ( Q>R>S>P ) D. ( S>R>Q>P ) |
12 |
| 797 | An aromatic compound ( (boldsymbol{X})left(boldsymbol{C}_{mathbf{8}} boldsymbol{H}_{mathbf{8}} boldsymbol{O}right) ) gives positive 2,4 -DNP test. It gives a yellow precipitate of compound ( (Y) ) on reaction with iodine and sodium hydroxide solution. ( (X) ) does not give Tollen’s test on oxidation under drastic conditions. It gives a carboxylic acid ( (Z)left(C_{7} H_{6} O_{2}right) cdot(Z) ) is also formed with ( (Y) ) during the reaction. ( (X),(Y) ) and ( (Z) ) respectively are: ( mathbf{A} cdot C_{6} H_{5} C O C H_{3}, C H I_{3}, C_{6} H_{5} C O O H ) в. ( C H_{3} C O C H_{3}, C H I_{3}, C H_{3} C O O H ) ( mathbf{c} cdot C_{6} H_{5} C O C H_{3}, C H I_{3}, C H_{3} C O O H ) D. ( C H_{3} C H O, C H I_{3}, C_{6} H_{5} C O O H ) |
12 |
| 798 | Assertion Benzaldehyde does not undergoes aldol condensation Reason Benzaldehyde does not contain acidic ( alpha ) -Hydrogen A. Statement- -I is True, Statement-II is True ; Statement-I is a correct explanation for Statement- is NOT a correct explanation for Statement- c. statement-l is True, Statement-II is False D. Statement-lis False, Statement-II is True |
12 |
| 799 | The major product in the following at ( 25^{circ} mathrm{C} ) is: ( C H_{3} C O O H^{C H_{3} C H_{2} N H_{2}} ) ( mathbf{A} cdot C H_{3} C O N H C H_{2} C H_{3} ) B ( cdot C H_{3} C H=N C H_{2} C H_{3} ) ( mathbf{c} cdot N H_{3}^{+} C H_{2}^{-} C H_{3} cdot C H_{2} C O O^{-} ) D. ( C H_{2} C O N=C H C H_{3} ) |
12 |
| 800 | Lower carboxylic acid are soluble in water due to: A. low molecular weight B. hydrogen bonding c. dissociation into ions D. easy hydrolysis |
12 |
| 801 | ( 0^{2} ) ( 0^{text {then }} ) ( sigma ) ( sigma ) |
12 |
| 802 | Which of the following is nucleophilic addition reaction? A. Hydrolysis of ethyl chloride by ( N a O H ) B. Purification of acetaldehyde by ( mathrm{NaH} mathrm{SO}_{3} ) C. Alkylation of anisol D. Decarboxlation of acetic acid |
12 |
| 803 | ( frac{8}{8} ) | 12 |
| 804 | Which of the following alkenes on reductive ozonolysis will give a mixture of ketones? ( mathbf{A} cdot C H_{3} C H=C H C H_{3} ) в. ( left(C H_{3}right)_{2} C=C H C H_{3} ) ( mathbf{c} cdotleft(C H_{3}right)_{2} C=Cleft(C H_{3}right)_{2} ) D. None of these |
12 |
| 805 | The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoro acetic acid (B), acetic acid (C) and formic acid (D) is A. ( A>B>C>D ) в. ( A>C>B>D ) с. ( B>A>D>C ) D. ( B>D>C>A ) |
12 |
| 806 | Above conversion can be achieved by : A ( cdot ) Li ( A l H_{4} ) в. ( N a B H_{4} ) c. ( H_{2} / N i ) ( mathrm{D} cdot mathrm{CrO}_{3} ) |
12 |
| 807 | The IUPAC name of above structure is : A. phenyl ethanone B. methyl phenyl ketone ( c . ) acetophenone D. phenyl methyl ketone |
12 |
| 808 | Benzaldehyde undergoes reaction due to of ( alpha ) -hydrogen atom. A. Cannizzaro’ presence B. Cannizzaro; absence c. Henry’s; absence D. Henry’s; presence |
12 |
| 809 | Question 3. How do you explain the absence of aldehyde group in the penta acetate of D-glucose? Free aldehyde group –CHO) gives reaction with Tollen’s reagent, Fehling reagent etc. |
12 |
| 810 | ( sigma_{0} ) ( @_{0} ) ( sigma_{0} ) ( sigma_{0} ) |
12 |
| 811 | Give the names of the functional groups: (I) ( -mathbf{C H O} ) |
12 |
| 812 | The most likely acid-catalysed aldol condensation products of each of the two aldehydes ( I ) and ( I I ) will respectively be and ( A ) and B. and ( c ) and ( D ) and |
12 |
| 813 | 2. On vigorous oxidation by alkaline permanganate solution, (CHỊ) C=CH-CH,CHO gives: OH OH (a) (CH3)2C-CH –CH,CH2 CH (b) CO + CHỊCH,COOH CH-OH + CH3CH2CH2OH () CH3 (d) CO + CHỊCH,CHO CH, (AIEEE 2002) |
12 |
| 814 | ( b ) ( d ) |
12 |
| 815 | What is the IUPAC name of ( boldsymbol{C H}_{3} boldsymbol{C H}= ) ( boldsymbol{C H}-boldsymbol{C O O H} ? ) A. 2-Butenoic acid B. Crotonic acid c. 2-Butanoic acid D. 3-Butenoic acid |
12 |
| 816 | Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions. Ethanal, Propanal, Propanone, Butanone A. Butanone < Propanone <Propanal < Ethanal B. Propanone <Butanone >Propanal c. Propanal < Ethanal < Propanone < Butanone D. Ethanal <Propanal<Propanone <Butanone |
12 |
| 817 | In the given sequence of reactions, predict ( (boldsymbol{X}) ) ( (boldsymbol{X}) frac{boldsymbol{K O H}}{boldsymbol{H}_{2} boldsymbol{O}}(boldsymbol{Y}) frac{boldsymbol{A l}_{2} boldsymbol{O}_{3}}{4 boldsymbol{3} boldsymbol{3} boldsymbol{K}}(boldsymbol{Z}) stackrel{[boldsymbol{O}]}{longrightarrow} ) ( 2 m o l C H_{3} C O O H ) ( mathbf{A} cdot C H_{3} C H_{2} C H(I) C H_{3} ) в. ( C H_{3} C H_{2} C H_{2} C H_{2} I ) c. ( C H_{3} C H(I) C H(I) C H_{3} ) D. ( C H_{3} C H(I) C H_{2} C H_{2} I ) |
12 |
| 818 | Green house effect is caused by A ( . N O_{2} ) в. ( C O ) ( c cdot C O_{2} ) D. ( O_{2} ) |
12 |
| 819 | The correct IUPAC name of the compound is: A. 3,3 -dimethyl-3-cyclopentyl propanal B. 3-Cyclopentyl-3-methyl butanal C. ( 1-(1 ) -methyl-1-formyl to ethylcyclopropane D. 3,3 -diethyl-3-cyclobutyl butanal |
12 |
| 820 | oxylic acids contain carbonyl group but do not show the nucleophilic addition reaction like aldehydes or ketones. Why? Ans. Carboxylic aci |
12 |
| 821 | Which is a common standard for calibrating a bomb calorimeter in teaching laboratories? A . Acetic acid B. Benzoic acid c. Picric acid D. Pheno |
12 |
| 822 | Which is most reactive towards soda – lime decarboxylation? ( A ) B. ( c ) D. |
12 |
| 823 | Reagent (C) is: ( mathbf{A} cdot O_{3} / P h_{3} P ) ( mathbf{B} cdot O_{3} / N a B H_{4} ) ( mathbf{c} cdot O_{3} / H_{2} O_{2} ) D. ( K M n O_{4} / ) O ( H ) |
12 |
| 824 | Assertion The second dissociation constant of fumaric acid is greater than maleic acid. Reason Higher the dissociation constant of acid more is the acidic character. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
12 |
| 825 | The given structure show bondline formula of 2, 3-Dimethylbutanal A. True B. False |
12 |
| 826 | 0 toppr 5 Q Trpesourr a. в. ( c_{0} cdot d- ) o. |
12 |
| 827 | Name the following compound according to the IUPAC system or nomenclature: ( boldsymbol{C H}_{3} boldsymbol{C O C H}_{2} boldsymbol{C O C H}_{3} ) |
12 |
| 828 | ( boldsymbol{H} boldsymbol{C} boldsymbol{H} boldsymbol{O} stackrel{text {Reduction}}{longrightarrow} boldsymbol{A} stackrel{boldsymbol{P}}{longrightarrow} )and( quad boldsymbol{I}_{2} ) ( boldsymbol{B} stackrel{boldsymbol{K C N}}{longrightarrow} boldsymbol{C} stackrel{boldsymbol{H y d r o l y s i s}}{boldsymbol{D}} ) What is ( D ? ) A . Acetic acid B. Ethylamine c. Acetamide D. None of these |
12 |
| 829 | Give the structure of the compound Phenyl acetaldehyde |
12 |
| 830 | IUPAC name of compound is: A. 3,3 -dimethylpropanoic acid B. 2-methylbutanoic acid c. 3-Methylbutanoic acid D. none of these |
12 |
| 831 | Explain why: Acetaldehyde undergoes aldol condensation, but formaldehyde does not |
12 |
| 832 | In the reaction sequence: Cyclohexane ( frac{h nu / C l_{2}}{longrightarrow}(X) frac{a l c . K O H / Delta}{longrightarrow} ) ( (boldsymbol{Y}) frac{(i) boldsymbol{O}_{3}}{(i i) boldsymbol{H}_{2} boldsymbol{O} / boldsymbol{Z} boldsymbol{n}}(boldsymbol{Z}) ) ( (Z) ) will be : A. Hexanal B. 2- Hexanone c. 3 – Hexanone D. Hexanedial |
12 |
| 833 | IUPAC name of the above compound is: A. bicyclo[3,2,1]-octan-2-oic acid B. bicyclo-[3,2,1]-octane-8-carboxylic acid C. bicyclo-[3,2,1]-octan-8-oic acid D. none of these |
12 |
| 834 | A strong base can abstract an ( alpha ) hydrogen from: A. ketone B. alkane c. alkene D. amine |
12 |
| 835 | The organic acid that can be made from ethanol is: A . acetic acid B. formic acid ( mathbf{c} cdot C_{3} H_{7} O H ) D. valeric acid E. butanoic acid |
12 |
| 836 | Considering all possible isomeric ketones, including stereoisomers of a compound having a molecular weight of 100. All these isomers are independently reacted with ( mathrm{NaBH}_{4} ). The total number of ketones that give a racemic product(s) is/are: [Note: stereoisomers are also reacted separately] |
12 |
| 837 | The compound (A) is: (D) ( quad(mathrm{C})+mathrm{CO}_{2} ) ( left(mathrm{C}_{3} mathrm{H}_{6} mathrm{O}right) ) ( A ) B. ( c ) D. |
12 |
| 838 | Identify the compound A among the following compounds. A. o-terephthalic acid B. o-terephthalaldehyde C. Salicylic acid D. None of these |
12 |
| 839 | Arrange the following in the increasing order of their reactivity towards nucleophilic addition reaction: [ mathrm{cH}_{3} mathrm{CocH}_{3}, mathrm{HCHO}, mathrm{cH}_{3} mathrm{CHO},langle/ sqrt{ }rangle-mathrm{cocH}_{3} ] |
12 |
| 840 | Which of the following reaction(s) is/are wrong? ( A ) B. ( c ) D. None of the above |
12 |
| 841 | Which of the following ( beta ) -keto carboxylic acid does not undergo decarboxylation on heating? ( A ) в. ( c ) D. None of these |
12 |
| 842 | For the following reaction, which of the following statements is correct? A. Ring (A) is oxidised B. Ring (B) is oxidised C. Both are oxidised D. None is oxidised |
12 |
| 843 | The reagent used in Wolff-Kishner reduction is: A. ( N H_{2}-N H_{2} ) and ( K O H ) in ethylene glycol в. ( Z n-H g / ) сопс. ( H C l ) c. ( N a B H_{4} ) D. ( N a-H g / H_{2} O ) |
12 |
| 844 | Acetyl chloride cannot be obtained by treating acetic acid with: A. ( C H C l_{3} ) в. ( P C l_{3} ) c. ( P C l_{5} ) D. ( S O C l ) |
12 |
| 845 | 126. A triene treated with ozone followed by CH, -S-CH, to give following three products. What is the structure of triene? H Product = HHHYY H H H 0 O |
12 |
| 846 | Which of the compounds shown will react with dimethyl malonate in the presence of methoxide ion to give a compound, which on treatment with aqueous acid and gentle heating will decarboxylate to form butanoic acid? A. ( C H_{2} C H C H_{2} ) СООН в. ( C H_{3} C H_{2} B r ) c. ( C H_{3} C H_{2} C O C H_{3} ) D. ( C H_{3} C H_{2} C H_{2} B r ) |
12 |
| 847 | 0 0 0 ( frac{0}{0} ) |
12 |
| 848 | IUPAC name of given compound is : [ mathrm{CH}_{3}-mathrm{CH}_{2}-underset{mathrm{CHO}}{mathrm{C}} mathrm{H}-stackrel{mathrm{CH}_{3}}{mathrm{C}} mathrm{H}-mathrm{CH}_{2}-mathrm{CH}_{3} ] A. 4-Methylhexanal-3 B. 3-Ethyl-2-methylpentanal c. 2-Ethyl-3-methylpentanal D. 4-Methylheptanal |
12 |
| 849 | Which of the following compounds has maximum volatility? ( A ) в. ( c ) D. |
12 |
| 850 | ( frac{8}{8} ) | 12 |
| 851 | How is ethanoic acid prepared from dry ice? |
12 |
| 852 | An important reaction of acetone is autocondensation in presence of concentrated sulphuric acid to give the aromatic compound A . Mesitylene B. Mesityl oxide c. Trioxan D. Phorone |
12 |
| 853 | Which of the following reagents may by used to distinguish between phenol and benzoic acid? A . Neutral ( F e C l_{3} ) B. Aqueous ( N a O H ) c. Tollen’s reagent D. Schiff’s reagent |
12 |
| 854 | (B) is resolvable but ( (A) ) is not. | 12 |
| 855 | Q. 46 Assertion (A) Aldehydes and ketones, both react with Tollen’s reagent to form silver mirror. Reason (R) Both, aldehydes and ketones contain a carbonyl group. |
12 |
| 856 | An organic compound (E) ( left(C_{5} H_{8}right) ) on hydrogenation gives a compound (F) ( left(C_{5} H 12right) . ) Compound (E) on ozonolysis gives formaldehyde and 2-ketopropanal. Deduce the structure of the compound (E). A. cyclopentene B. 1,4 pentadiene c. 1,3 pentadiene D. 2 methyl 1,3 butadiene |
12 |
| 857 | Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their A. more extensive association of carboxylic acid via van der Waals force of attraction B. formation of intramolecular H-bonding c. formation of intermolecular H-bonding D. formation of carboxylate ion |
12 |
| 858 | Among the following compounds, which one has maximum boiling point? A. Propionic acid B. Ethyl methyl ketone c. n- butyraldehyde D. n-pentane |
12 |
| 859 | 134. Which of the following compounds producee 1,5-cyclooctanedione on ozonolysis? |
12 |
| 860 | Aldehydes upto are colourless liquids. A ( . C_{11} ) в. ( C_{12} ) ( c cdot C_{13} ) D. ( C_{1} ) |
12 |
| 861 | Write the common name and IUPAC name of the following. (a) ( C H_{3} C H_{2} C H O ) (b) ( boldsymbol{C H}_{3} boldsymbol{C O C H}_{3} ) ( (c) C H_{3}-underset{mid O H}{C} H-C H_{3} ) (d) ( C H_{3} C O O H ) (e) ( H C H O ) |
12 |
| 862 | Lower aldehyde and ketones attributed to the formation of ( _{–}-_{-}- ) bonding with water molecules. A. Sigma bonding B. pii bonding c. covalent bonding D. Hydrogen bonding |
12 |
| 863 | ( pi ) bonds are formed by the overlap of orbitals. |
12 |
| 864 | Choose the correct answer among the alternatives given: Study the following sequence of reaction and identify the compounds ( (X) ) and ( (Y) ) A. ( X= ) Benzaldehyde, ( Y= ) Benzoic acid B. ( X=2 ) -Chlorotoluene, ( Y=2 ) -chlorobenzoic acid c. ( X=2, ) 4 – Dichlorobenzene, ( Y= ) Benzoic acid |
12 |
| 865 | Name the following compound according to the IUPAC system or nomenclature: ( boldsymbol{C H}_{3} boldsymbol{C H}=boldsymbol{C H C H O} ) |
12 |
| 866 | Acid present in honey bee sting is: A. formic acid B. propanoic acid c. butanoic acid D. none of these |
12 |
| 867 | Arrange the following carboxylic acids in increasing order of reactivity towards thermal decarboxylation reaction: ( A cdot|<||<|||<mid V ) c. ( |<| V<|<| ) |
12 |
| 868 | Complete the following reaction and identify the products formed | 12 |
| 869 | Formaldehyde polymerises to give: A. Paraformaldehyde B. Paraldehyde c. Formalin D. Formic acid |
12 |
| 870 | Which of the following is/are soluble in water? A. Lower esters B. Lower carboxylic acids c. Lower alcohol D. All of the above |
12 |
| 871 | Consider the ester benorylate (an analgesic) shown below. The correct statement regarding the rate of base-catalyzed hydrolysis of benorylate is: This question has multiple correct options A . a nitro group substitution at ( C 4 $ ) will increase the rate B. a methoxy group substitution at ( C 4 ) will decrease the rate c. a nitro group substitution at ( C 4 ) will decrease the rate D. a methoxy group substitution at ( C 4 ) will increase the rate |
12 |
| 872 | Name the following compounds according to IUPAC system of nomenclature: (i) ( boldsymbol{C H}_{3} boldsymbol{C H}left(boldsymbol{C H}_{3}right) boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{C H O} ) (ii) ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C O C H}left(boldsymbol{C}_{2} boldsymbol{H}_{5}right) boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{C l} ) (iii) ( boldsymbol{C H}_{3} boldsymbol{C H}=boldsymbol{C H C H O} ) (iv) ( boldsymbol{C H}_{3} boldsymbol{C O C H}_{2} boldsymbol{C O C H}_{3} ) ( (v) ) ( boldsymbol{C H}_{3} boldsymbol{C H}left(boldsymbol{C H}_{3}right) boldsymbol{C H}_{2} boldsymbol{C}left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C O C H}_{3} ) (vi) ( left(boldsymbol{C H}_{3}right)_{3} boldsymbol{C C H}_{2} boldsymbol{C O O H} ) ( left(text { vii) } boldsymbol{O} boldsymbol{H} boldsymbol{C} boldsymbol{C}_{6} boldsymbol{H}_{4} boldsymbol{C H} boldsymbol{O}-boldsymbol{p}right. ) |
12 |
| 873 | Which of the following converts acetone to acetone oxime? A. ( H_{2} N-N H_{2} ) в. ( 2,4- ) DNP c. ( C_{6} H_{5} N H N H_{2} ) D. ( N H_{2} O H ) |
12 |
| 874 | In the reaction ( mathrm{CH}_{3} mathrm{OH} rightarrow mathrm{HCOOH} ), the number of electrons that must be addad to the right is : A .4 B. 3 ( c cdot 2 ) D. |
12 |
| 875 | The number of geometrical isomers of ( A ) can be : ( (mathbf{A}) ) ( A ) B. 3 ( c ) ( D ) |
12 |
| 876 | what is the proauct or the rollowıng reaction? ( c ) 2 |
12 |
| 877 | ( alpha- ) amino acid when heated with NaOH/CaO forms: A. ( alpha, beta ) -unsaturated acid B. ( alpha, beta ) -unsaturated amine c. carboxylic acid D. Amine |
12 |
| 878 | The strongest acid is: A. acetic acid B. trichloroacetic acid C . dichloroacetic acid D. monochloroacetic acid |
12 |
| 879 | following reaction: ( boldsymbol{C}_{6} boldsymbol{H}_{6}+boldsymbol{D}_{2} boldsymbol{S} boldsymbol{O}_{4} stackrel{D_{2} boldsymbol{O}}{longrightarrow} boldsymbol{X} ) ( A ) B. ( c ) ( D ) |
12 |
| 880 | Rosenmund reduction is used for the preparation of A. carboxylic acid B. aldehydes c. esters D. alcohols |
12 |
| 881 | Polarity of carbonyl group increase with increase of A. electronegative groups B. electropositive groups C . neutral group D. none of these |
12 |
| 882 | Arrange in the order of nucleophilicity: ( boldsymbol{H O}^{-}, boldsymbol{C H}_{3} boldsymbol{O}^{-}, boldsymbol{C H}_{3} equiv ) ( boldsymbol{C}^{-}, boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C O O}^{-} ) A. ( H O^{-}>C H_{3} O^{-}>C H_{3} equiv C^{-}>C H_{3} C O O ) в. ( C H_{3} C O O^{-}>H O^{-}>C H_{3} O^{-}>C H_{3} equiv C^{-} ) C. ( H O^{-}<C H_{3} O^{-}<C H_{3} equiv C^{-}<C H_{3} C O O^{-} ) D. ( C H_{3} C O O^{-}<H O^{-}<C H_{3} O^{-}<C H_{3} equiv C^{-} ) |
12 |
| 883 | 8 ( 3= ) ( Delta x ) ( 4 times 0 ) 8 |
12 |
| 884 | Which of the following has an aldehyde functional group? A. ( R-C O O H ) в. ( R-C H O ) c. ( R-C O-R ) D. ( R-C O O-R ) E ( . R-C O-N H_{2} ) |
12 |
| 885 | Which of the following is most readily hydrolysed by aqueous NaOH solution. ( A ) в. ( c ) D. |
12 |
| 886 | Aldol condensation will not be observed in? A. Chloral B. Phenyl acetaldehyde c. Hexanal D. Ethanal |
12 |
| 887 | The suitable reagent(s) will be: A ( cdot C r O / H_{2} O / ) acetone ( mathbf{B} cdotleft[A gleft(N H_{3}right)_{2}right)^{oplus}(text {aqueous}), H^{+} ) c. ( C r O / H C l / ) pyridine ( D ) соома |
12 |
| 888 | The IUPAC name of the given compound ( boldsymbol{C H}_{3} boldsymbol{C H}left(boldsymbol{C H}_{3}right) boldsymbol{C H O} ) is ( boldsymbol{x} ) methylpropanal. What is ( x ? ) |
12 |
| 889 | Which is wrong IUPAC name? This question has multiple correct options ( mathbf{A} cdot C H_{3} C H_{2} C H_{2} C O O C H_{2} C H_{3}(text { Ethylbutanoate }) ) B. ( C H_{3} C H C H_{2} C H O ) (3-Methyl butanol) [ begin{array}{l}_{C H_{3}}end{array} ] ( mathbf{c} cdot C H_{3}-C H-C H-C H_{3} quad ) (2-Methyl-3-butanol) [ begin{array}{l}mid \ O H quad C H_{3}end{array} ] D. ( C H_{3} C H C O C H_{2} C H_{3} ) (2-methyl-3-pentanone) [ begin{array}{l}C H_{3}end{array} ] |
12 |
| 890 | Which acid is used in medicine for the treatment of gout? A. Hydrochloric acid B. Methanoic acid c. Ethanoic acid D. None of these |
12 |
| 891 | ( sum_{i}^{infty} ) | 12 |
| 892 | Question 1. Why is there a large difference in the boiling points of butanal and butan-1-ol? |
12 |
| 893 | ( boldsymbol{R} boldsymbol{C O C l}+boldsymbol{H}_{2} stackrel{boldsymbol{P d}-boldsymbol{B a S O}_{4}}{boldsymbol{R} boldsymbol{C H} boldsymbol{O}}+ ) HCl. The reaction is known as: A. Rosenmund reduction B. Stephen’s reaction c. Wolff-Kishner reduction D. Clemmensen’s reduction |
12 |
| 894 | ( = ) ( sigma ) ( sigma ) |
12 |
| 895 | ( boldsymbol{C H}_{3} boldsymbol{C O O H} frac{C a(boldsymbol{O H})_{2}}{boldsymbol{Delta}} boldsymbol{A} frac{boldsymbol{C a}(boldsymbol{O O C H})_{2}}{boldsymbol{lambda}} ) ( boldsymbol{B} stackrel{N H_{2} O boldsymbol{H}}{longrightarrow} boldsymbol{C} ) Identify the ‘ ( C^{prime prime} ) in the given series ( stackrel{mathrm{H}_{3} mathrm{C}}{mathrm{H}_{3} mathrm{C}} mathrm{C}=mathrm{NOH} ) в. ( C H_{3} C H=N O H ) ( mathbf{c} cdot H_{2} C=N O H ) D. ( C H_{3} C H_{2} C H=N O H ) |
12 |
| 896 | opo yo |
12 |
| 897 | Do me reagent which does not react with both, acetone and benzaldehyde? (a) Sodium hydrogen sulphite (b) Phenyl hydrazine (c) Fehling’s solution (d) Grignard reagent |
12 |
| 898 | (a) Zn-Hg/HCI > M 35. (b) NH, NHM/KOH → Using high boiling solvent N HO (c) HI/P (a) Mis (b) Nis НО (c) Yis (d) All of these are correct |
12 |
| 899 | Which of the following chemical is used in making metal polishes: A . oxalic acid B. methanoic acid c. both A and B D. none of these |
12 |
| 900 | Which one of the following reactions is not correct? ( mathbf{A} cdot C H_{3} C H O+frac{1}{2} O_{2} stackrel{M n(O A c) 2 / a i r}{rightarrow} C H_{3} C O O H ) B. ( C H_{3} C H_{2} O H+O_{2}^{text {Micodermaceti}} C H_{3} C O O H+H_{2} O ) c. ( C H_{3} M g B r underbrace{(1) C O_{2}}_{(2) H_{2} O oplus} C H_{3} C O O H+M g(O H) B r ) ( mathrm{D} cdot mathrm{CH}_{3} mathrm{O} mathrm{H}+mathrm{CO}^{mathrm{Ca} / Delta_{rightarrow, text {prssure}}} mathrm{CH}_{3} mathrm{COOH} ) |
12 |
| 901 | 1 mole 31. Ph—MgBr + (CH3)-CH-C-C1 > [X] Zn-HQ/HCI > [YI Identify structure of [Y]. (a) PháCH, CH–CH, CH, (b) Ph-CH-CH2-CH, CH CH, (c) Ph C-CH, CH (4) O-CH, CH, CH, CH |
12 |
| 902 | Assertion Aldehyde have lower boiling point than ether. Reason Aldehydes are less polar than ether. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
12 |
| 903 | Ouestion 11. Write down functional isomers of a carbonyl compound with molecular formula C H,0. Which isomer will react faster with HCN and why? Explain the mechanism of the reaction also. Will the reaction lead to the completion with the conversion of whole reactant into product at reaction conditions? If a strong acid is added to the reaction mixture what will be the effect on concentration of the product and why? |
12 |
| 904 | o-Xylene on ozonolysis will give: ( A ) B. ( & ) ( c ) ( D ) 0 |
12 |
| 905 | ( mathrm{X} ) and ( mathrm{Y} ) in the below reaction are and ( _{-}-_{-}- ) respectively ( boldsymbol{C}_{6} boldsymbol{H}_{5}-boldsymbol{C O}_{2} boldsymbol{H}+boldsymbol{X} stackrel{text {heat}}{longrightarrow} boldsymbol{C}_{6} boldsymbol{H}_{5}- ) ( C O C l frac{H_{2}, P d / B a S O_{4}}{Q u i n o l i n e}> ) A. ( S O C l_{2} ) and ( C_{6} H_{5} C H O ) B . ( (C O C l)_{2} ) and ( C_{6} H_{5} C H_{3} ) c. ( operatorname{SOCl}_{2} ) and ( C_{6} H_{5} C H_{3} ) D. ( (C O C l)_{2} ) and ( C_{6} H_{5} C H_{2} O H ) E ( . S O C l_{2} ) and ( C_{6} H_{5} C H_{2} C l ) |
12 |
| 906 | What is the structural formula of fumaric acid? ( A ) [ text { HOOC }-mathbf{C}-mathbf{C H}_{3} ] B. [ mathbf{H}_{3} mathbf{C}-mathbf{C}-mathbf{C O O H} ] ( c ) D. HOOC ( -mathbf{C}-mathbf{H} ) |
12 |
| 907 | Which of the following is most reactive towards electrophilic nitration? A. Toluene B. Benzene c. Benzoic acid D. Nitrobenzene |
12 |
| 908 | Which of the following is the strongest acid? A. ( C H_{3} ) СООН в. ( C H_{2} ) СlСООН c. ( C H C l_{2} C O O H ) D. ( C C l_{3} ) СООН |
12 |
| 909 | ( frac{-}{8} ) ( d ) ( frac{6}{6} ) 0 |
12 |
| 910 | toppr Q Type your question (iii) ( mathrm{CH}_{3} mathrm{MgBr} ) ( (mathrm{iv}) mathrm{H}_{3} mathrm{O}^{8} ) ( A ) ( B ) ( c ) ( D ) |
12 |
| 911 | product (c)is. ( A ) B. ( c ) ( D ) |
12 |
| 912 | The product ( C ) is (according to the image shown) ( A cdot A ) B. B ( c cdot c ) D. |
12 |
| 913 | A monobasic acid A has neutralization equivalent 116 and does not decolorize Bayer’s regent. Also, A is enantiomeric. A on treatment with ( B r_{2} / r e d ) phosphorus produces B which is still resolvable. B on dehydrobromination produced C which shows stereoisomerism ( C ) on decarboxylation produced. D which does not show stereoisomerism. Deduce structures of ( A, B, C, ) and ( D ) |
12 |
| 914 | In which pairs first compound is weak acid than the second? This question has multiple correct options A. Adipic acid, succinic acid B. Fumaric acid, maleic acid c. Phthalic acid, terepthalic acid D. Salicylic acid, o – toluic acid |
12 |
| 915 | Which of the compounds with molecular formula ( C_{5} H_{10} ) yields acetone on ozonolysis? A. 2-Methyl-1-butene B. 2-Methyl-2-butene c. 3-Methyl-1-butene D. Cyclopentane |
12 |
| 916 | In the reaction sequence, ( C_{2} H_{5} C l+ ) ( K C N stackrel{C_{2} H_{5} O H}{longrightarrow} X frac{H_{3} O oplus}{Delta} Y, ) what is the molecular formula of Y? ( mathbf{A} cdot C_{3} H_{6} O_{2} ) в. ( C_{3} H_{5} N ) c. ( C_{2} H_{4} O_{2} ) D. ( C_{2} H_{6} O ) |
12 |
| 917 | Out of aldehyde and ketones, which is more reactive towards nucleophilic addition? A. Aldehyde B. Ketone c. Equally reactive D. cannot be predicted |
12 |
| 918 | The final product ( (Y) ) in the following sequence of chemical reaction is: ( boldsymbol{C H}_{3} boldsymbol{O H} frac{boldsymbol{C u}}{mathbf{3 0 0}^{circ} boldsymbol{C}} boldsymbol{X} stackrel{boldsymbol{N a O H}}{longrightarrow} boldsymbol{Y}+ ) ( boldsymbol{C H}_{3} boldsymbol{O} boldsymbol{H} ) ( A ). an alkene B. a carboxylic acid c. an aldehyde D. sodium salt of carboxylic acid |
12 |
| 919 | What is the final product ( ^{prime} C^{prime} ) in the following reaction? ( boldsymbol{C H}_{3} boldsymbol{C H O} stackrel{boldsymbol{H C N}}{longrightarrow} boldsymbol{A}^{prime} stackrel{boldsymbol{H}_{2} boldsymbol{O}^{+}}{longrightarrow} ) ( ‘ boldsymbol{B}^{prime} frac{text {sodalime}}{longrightarrow} boldsymbol{C}^{prime} ) A. Propane B. Propanol c. Ethanol D. Propanoic acid |
12 |
| 920 | Q Type your question ( A ) COOH B ( c ) coof ( D ) |
12 |
| 921 | Which is the main functional group in Acrolein? A. Aldehyde B. Alkene c. Nitrile D. Ester |
12 |
| 922 | (i) Write Hell – Volhard – Zelinsky reaction. (ii) Write cross – aldol condensation. (iii) Ethanoic acid is weaker acid than benzoic acid. Why? |
12 |
| 923 | 12. In which of the following reactions, the Kolbe’s electrolysis product is incorrectly mentioned? 2 COOK Electrolysis COOK (b) KOOC Electrolysis COOK = > A (c) ACOGOK Elecrosis, w El (d) CH-CH2-CH-COOK Electrolysis, |
12 |
| 924 | Cannizzaro reaction will be given by: (iv) ( mathrm{cH}_{3} ) сно ( A cdot(i),(text { ii) }, ) (iii) B. (i) and (ii) c. (ii) and (iii) D. (i) and (iv) |
12 |
| 925 | Which of the following carboxylic acids undergoes decarboxylation easily? A. ( C_{6} H_{5} ) СОСН( _{2} ) СООН в. ( C_{6} H_{5} ) СОСООН c. ( C_{6} H_{5} C H-underset{O H}{_{O H}} ) С ООН D. ( C_{6} H_{5} ) СНСООН ( N H_{2} ) |
12 |
| 926 | 11. The compound formed as a result of oxidation of ethyl benzene by KMnOis: (a) benzophenone (b) acetophenone (c) benzoic acid (d) benzyl alcohol |
12 |
| 927 | What is the general name of pentanal ( left(boldsymbol{C}_{4} boldsymbol{H}_{boldsymbol{g}} boldsymbol{C H O}right) ? ) |
12 |
| 928 | Name the following compound according to the IUPAC system or nomenclature : ( left(boldsymbol{C H}_{3}right)_{3} boldsymbol{C C H}_{2} boldsymbol{C O O H} ) |
12 |
| 929 | Which of the following reagents converts both acetaldehyde and acetone to alkanes? A ( . N i / H_{2} ) в. LiАlH( _{4} ) ( mathbf{c} cdot I_{2} / N a O H ) D. zn-Hg/conc. HCI |
12 |
| 930 | In which of the following reactions product will be aldehyde? This question has multiple correct options ( A ) [ mathrm{CH}_{3}-mathrm{C}=mathrm{C}-left.mathrm{C}_{2} mathrm{H}_{5} frac{(mathrm{i}) mathrm{O}_{3}}{mathrm{CH}_{3}}right|_{mathrm{CH}_{3}} ] в. ( C H_{3}-C H=C H_{2} frac{C O / H_{2} / C O_{2}(C O)_{8}}{Delta} ) c. ( C H_{3}-C equiv C H frac{B_{2} H_{6}}{N a O H, H_{2} O_{2}} ) D. ( C H_{3}-C equiv C H stackrel{H O H / H g S O_{4} / H_{2} S O_{4}}{longrightarrow} ) |
12 |
| 931 | H0 (US) 0.1 Addition of water to alkvnes occurs in acidic medium and in the sence of HgC+ ions as a catalyst. Which of the follo as a catalyst. Which of the following products will be formed on addition of water to but-1-vne under these conditions: o (a) CH3 – CH2 – CH3C-H (b) CH2 – CH2-C-CH O (C) CH3 -CH-C-OH + CO, (d) CH3-C-OH + H-C-H |
12 |
| 932 | Which of the following is used as a food preservative? A. Aldehydes B. Ketones c. carboxylic acid D. Alcohol |
12 |
| 933 | 9. Liquid …………… is used to preserve donated organs. |
12 |
| 934 | lo. 38 Match the common names given in Column I with the IUPAC names given in Column II. 02: A. B. C. D. E. Column 1 (Common names) Cinnamaldehyde Acetophenone Valeraldehyde Acrolein Mesityl oxide 2. 3. Column II (IUPAC names) Pentanal Prop-2-en-al 4-methylpent-3-en-2-one 3-phenylprop-2-en-al 1-phenylethanone 5. |
12 |
| 935 | Find the product in the given reaction. | 12 |
| 936 | The compound (A) is: ( A ) в. c. D. Both (a) and (b) |
12 |
| 937 | Which of the following compounds will undergo Cannizzaro reaction? A. ( C H_{3} C H O ) в. ( C H_{3} ) СОСН( _{3} ) ( mathbf{c} cdot C_{6} H_{5} C H O ) D. ( C_{6} H_{5} C H_{2} C H O ) |
12 |
| 938 | The IUPAC name of the given compound is: A . 1-hydroxycyclohex-4-en-3-one B. 1-hydroxycyclohex-3-en-5-one c. 3-hydroxycyclohex-5-en-1-one D. 5-hydroxycyclohex-2-en-1-one |
12 |
| 939 | How can you change propane nitrile to propanal? | 12 |
| 940 | The correct rate of reaction of given compounds towards electrophilic aromatic substitution reaction is: A ( cdot(b)>(d)>(a)>(c) ) B. ( (b)>(a)>(d)>(c) ) C. ( (c)>(a)>(d)>(b) ) D. ( (a)>(b)>(d)>(c) ) |
12 |
| 941 | Which one of the following reactions is called Rosenmund reaction? A. Aldehydes are reduced to alcohols. B. Acids are converted to acid chlorides. c. Alcohols are reduced to hydrocarbons. D. Acid chlorides are reduced to aldehydes. |
12 |
| 942 | Question 4. Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions. ) Ethanal, propanal, propanone, butanone. (ii) Benzaldehyde, p-tolualdehyde, p-nitro b enzaldehyde, acetophenone. Reactivity depends on two factors: Steric effect and electronic effect Lesser the steric hindrance, higher is the reactivity. |
12 |
| 943 | The acid in which ( – ) COOH group is (are) present? This question has multiple correct options A. ethanoic acid B. picnic acid c. lactic acid D. palmitic acid |
12 |
| 944 | What is the IUPAC name for ( C H_{3} C H O ? ) A . Acetal B. Methanal c. Ethanal D. Acetaldehyde |
12 |
| 945 | The treatment of ( left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C}=boldsymbol{C H} boldsymbol{C H}_{3} ) with boiling ( K M n O_{4} ) produces : A. ( C H_{3} C O C H_{3}+C H_{3} C O O H ) B. ( C H_{3} C O C H_{3}+C H_{3} C H O ) c. ( C H_{3} C H O+C O_{2} ) D. ( C H_{3} C O C H_{3} ) only |
12 |
| 946 | ( boldsymbol{C H}_{3}-boldsymbol{M} boldsymbol{g}-boldsymbol{B r}+boldsymbol{C O}_{2} rightarrow boldsymbol{X} stackrel{boldsymbol{H}_{3} boldsymbol{O} oplus}{longrightarrow} ) ( Y ) In this reaction Y is : ( mathbf{A} cdot H C O O H ) в. ( C H_{3} ) СООН с. ( C_{2} H_{5} )СООН D. ( H C H O ) |
12 |
| 947 | What is meant by Oxime? Give an example of reaction(with mechanism) showing its formation. | 12 |
| 948 | Benzene carbaldehyde is reacted with concentrated ( N a O H ) solution to give the products ( A ) and ( B ). The product ( A ) can be used as food preservative and the product ( B ) is an aromatic hydroxy compound where ( O H ) group is linked to ( s p^{3} ) hybridised carbon atom next to benzene ring. The products ( A ) and ( B ) respectively are : A. sodium benzoate and phenol B. sodium benzoate and phenyl methanol c. sodium benzoate and cresol D. sodium benzoate and picric acid |
12 |
| 949 | The final product of the following sequence of reaction is? ( left(boldsymbol{C H}_{3} boldsymbol{O}right)_{2} boldsymbol{C H} boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{B r} stackrel{M g}{longrightarrow} ) ( stackrel{boldsymbol{H}_{2} boldsymbol{C}=boldsymbol{O}}{longrightarrow} underset{boldsymbol{h e a t}}{boldsymbol{H}_{3}} stackrel{boldsymbol{rho}}{_{boldsymbol{h e a t}}} ) ( ^{text {A. }} quad_{C H_{3} O C C H_{2} C H_{2} C H_{2} C H_{2} O H}^{0} ) в. ( _{|}^{o} ) ( C H_{3} C C H_{2} C H_{2} C H_{2} C H_{2} O H ) ( c ) ( _{mathrm{H}}^{mathrm{O}} ) ( mathrm{CCH}_{2} mathrm{CH}_{2} mathrm{CH}_{2} mathrm{CH}_{2} mathrm{OH} ) |
12 |
| 950 | Which is enolisable? A. Benzophenone B. 2, 4 – pentanedione c. phenyl- t- butyl ketone D. All the above |
12 |
| 951 | The compound formed as a result of oxidation of ethyl benzene by ( boldsymbol{K} boldsymbol{M} boldsymbol{n} boldsymbol{O}_{4} ) is: A. acetophenone B. benzophenone c. benzoic acid D. benzaldehyde |
12 |
| 952 | How many geometrical isomer of ( (boldsymbol{X}) ) is possible? |
12 |
| 953 | Identify Z in the given reaction. ( mathrm{CH} equiv mathrm{CH} frac{mathrm{H}_{2} mathrm{SO}_{4}+mathrm{HgSO}_{4}+60^{0} mathrm{C}}{longrightarrow} boldsymbol{Z} ) A ( cdot C_{2} H_{5} I ) в. ( C_{2} H_{5} O H ) с. ( C H I_{3} ) D. ( C H_{3} C H O ) |
12 |
| 954 | (B), (C), and (D), respectively, are: ( A ) ( (mathrm{I}) ) ( (mathrm{III}) ) B. (I), (III), (II) c. ( (| 1),(text { II ) },(1) ) D. (III), (I), (II) |
12 |
| 955 | Which of the following does not possess alpha hydrogen? A. Acetaldehyde B. Formaldehyde c. Acetone D. Phenyl acetaldehyde |
12 |
| 956 | Write the ( I U P A C ) names of the following ketones and aldehydes. Wherever possible, give also common names. A ( cdot C H_{3} C Oleft(C H_{2}right)_{4} C H_{3} ) в. ( C H_{3} C H_{2} C H B r C H_{2} C Hleft(C H_{3}right) C H O ) c. ( C H_{3}left(C H_{2}right)_{5} C H O ) D. ( P h-C H=C H-C H O ) |
12 |
| 957 | 129. Select the best starting material for the following reaction: 03, Zn-H20 III HH |
12 |
| 958 | Q. 25 Name the electrophile produced in the reaction of benzene with benzoyl chloride in the presence of anhydrous ALC 3. Name the reaction also. |
12 |
| 959 | ( 0-0 ) ( 0-0 ) ( 0=0 ) ( 0-0 ) |
12 |
| 960 | (a) Write a test to distinguish between aldehydes and ketones. (b) How will you prepare benzaldehyde by Etard’s reaction? (c) How will you bring about the following conversions? (Write the chemical equations) (i) Ethanol ( rightarrow ) Ethanoic acid (ii) Benzamide ( rightarrow ) Benzoic acid (iii) Benzaldehyde ( rightarrow ) Meta nitrobenzaldehyde. |
12 |
| 961 | Which alkene on ozonolysis gives above mention product? ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H O} ) and ( boldsymbol{C H}_{3} underset{|}{C} boldsymbol{C H}_{3} ) A ( cdot C H_{3} C H_{2} C H=Cleft(C H_{3}right) ) B. ( C H_{3} C H_{2} C H=C H C H_{2} C H_{3} ) c. ( C H_{3} C H_{2} C H=C H C H_{3} ) D. ( C H_{3}-C_{text {। }}=C H C H_{3} ) |
12 |
| 962 | ( (mathbf{1}) boldsymbol{C}_{6} boldsymbol{H}_{5}-stackrel{mathbf{0}}{boldsymbol{C}}-boldsymbol{C}_{mathbf{6}} boldsymbol{H}_{mathbf{5}} ) ( (2) C_{6} H_{5}-C H O ) ( (mathbf{3}) boldsymbol{p}-boldsymbol{C} boldsymbol{H}_{3}-boldsymbol{C}_{6} boldsymbol{H}_{4}-boldsymbol{C} boldsymbol{H} boldsymbol{O} ) ( (4) p-C H_{3} O-C_{6} H_{4}-C H O ) Correct order for nucleophilic addition reaction. A ( .2>1>3>4 ) 4 ( 4>1>3>1>3>1>3>2 ) 4 в. ( 4>3>2>1 ) c. ( 2>3>4>1 ) D. ( 4>2>3>1 ) |
12 |
| 963 | On ozonolysis, ethylene gives: A. aldehyde B. ketone c. carboxylic acid D. ether |
12 |
| 964 | ( frac{0}{frac{0}{6}} ) | 12 |
| 965 | IUPAC name of the compound ( boldsymbol{C H}_{3}- ) ( boldsymbol{C H}_{2}-stackrel{0}{boldsymbol{C}}-boldsymbol{C H}_{2}-stackrel{0}{boldsymbol{C}}-boldsymbol{C O O H} ) A. hexanedione – 2, 4-ic-1-oic acid B. 2, 4- dioxohexanoic acid c. propionyl-dioxo-oic acid D. none of these |
12 |
| 966 | a. Both (A) and (B) are resolvable. | 12 |
| 967 | (a) Write a note on Rosenmund reduction. (b) Why is fluoroacetic acid more acidic than chloroacetic acid? (c) Draw the resonating structures of carboxylate ion. |
12 |
| 968 | Formalin ( 40 % ) indicates: A. ( 40 % ) water, ( 6 % ) formaldehyde B. ( 40 % ) water, ( 60 % ) formaldehyde C. ( 60 % ) water, ( 40 % ) formaldehyde D. ( 4 % ) water, ( 69 % ) formaldehyde |
12 |
| 969 | Choose the correct answer among the alternatives given: In the following reaction, product ( (P) ) is: ( boldsymbol{R}-stackrel{|}{boldsymbol{C}}-boldsymbol{C l} frac{boldsymbol{H}_{2}}{boldsymbol{p} boldsymbol{d} / boldsymbol{B a S O}_{4}} boldsymbol{P} ) A. ( R C H O ) в. ( R C H_{3} ) c. ( R C O O H ) D. ( R C H_{2} O H ) |
12 |
| 970 | The ( p K_{a} ) values for the three ionizable groups ( X, Y ) and ( Z ) of glutamic acid ( 4.3,9.7 a n d 2.2 ) respectively. The isoelectric point for the amino acid is: [ begin{aligned} mathrm{H} mathrm{O}_{2} mathrm{C}-mathrm{CH}_{2} &-mathrm{CH}-mathrm{CO}_{2} mathrm{H} \ mathrm{X} &+mathrm{NH}_{3} end{aligned} ] A . 7.00 B. 3.25 c. 4.95 D. 5.95 |
12 |
| 971 | The correct order of following compounds for increasing reactivity towards electrophilic substitution is: B. ( |I|<|<|<mid V ) C. ( |<| V<|| mid<| ) D. ( |<| 1<1<I V ) |
12 |
| 972 | ( C_{6} H_{5} C H_{3} frac{C r O_{2} C l_{2}}{longrightarrow} A stackrel{H_{2} O}{longrightarrow} B ) The functional group present in ( mathrm{B} ) and name of the reaction would be : A. ( -C H O ), Gattermann aldehyde synthesis B. ( -C H O ), Etard reaction c. ( -C O C H_{3} ), Friedel Crafts reaction D. ( -C H O ), Oxo reaction |
12 |
| 973 | Which of the following methods is/are correct for the synthesis of : A. ( mathrm{PhBr} frac{(1) mathrm{Li}(2) mathrm{CuII}(3) mathrm{Pr} mathrm{COC}}{(4) 2 mathrm{n}-mathrm{Hg} / mathrm{HCl}} ) B. ( mathrm{PhCOPr} quad ) Zn-Hg/HCl ( c ) ( mathrm{PhCOPr} frac{mathrm{NH}_{2} mathrm{NH}_{2}}{_{mathrm{OH}, Delta}^{circ}} ) ( D ) |
12 |
| 974 | Diacetone alcohol is also known as A. 4 -hydroxy butyraldehyde B. 4 -Hydroxy- 4 -methyl-2-pentanone c. but-2-en-1-al D. butan- 2,4 -dione |
12 |
| 975 | A ketone has molar mass ( 86 . ) Which of the following cannot be IUPAC name of this ketone? A. 2 -pentanone B. 2-methyl butanone c. 3 -methyl butanone D. 3 -pentanone |
12 |
| 976 | An enantiomerically pure acid is treated with a racemic mixture of an alcohol having one chiral carbon. The ester formed will be: A. optically active mixture B. pure enantiomer c. meso compound D. racemic mixture |
12 |
| 977 | How are carboxylic acids prepared using Grignard reagent? | 12 |
| 978 | ( sqrt[4]{0} x+cos (infty) ) .700 ( $ ) ( $ 0 ) ( tan ) |
12 |
| 979 | Which of the following carboxylic acids is a tricarboxylic acid? A . Oxalic acid B. Citric acid c. succinic acid D. Adipic acid |
12 |
| 980 | Soaps and detergent industries uses: A . lower fatty acids B. higher fatty acids c. esters D. alcohols |
12 |
| 981 | Match the column. | 12 |
| 982 | n-butyl benzene on oxidation will give: A. benzoic acid B. butanoic acid c. benzyl alcohol D. benzaldehyde |
12 |
| 983 | Fill in the blanks. begin{tabular}{llll} S.No. & Molecular formula & Common name & IUPA nam \ hline ( 1 . ) & ( mathrm{CH}_{3} mathrm{COOH} ) & ( ldots ) & Ethan acid \ hline ( 2 . ) & ( mathrm{HCHO} ) & Formaldehyde & ( ldots ) \ hline end{tabular} |
12 |
| 984 | ( frac{d}{d} ) | 12 |
| 985 | Identify ( A ) A. ( H C H O ) ( mathbf{B} cdot C H_{3} C H O ) ( mathbf{C} cdot C_{6} H_{5} C H O ) ( mathrm{D} cdot mathrm{CH}_{3} mathrm{COCH}_{3} ) |
12 |
| 986 | A neutral organic compound A has formula ( C_{9} H_{16} O_{3} ) and rotates plane polarized light. A on acid hydrolysis produces ( mathrm{B} ) and ( Cleft(C_{3} H_{8} Oright) . ) C on partial oxidation with PCC gives ( Dleft(C_{3} H_{6} Oright) ) which does not give iodoform test. D on treatment with dilute solution of ( N a O H operatorname{gives} Eleft(C_{6} H_{12} O_{2}right) ) which is diastereomeric. E on treatment with the acidic solution of ( K M n O_{4} ) produces ( B ) Deduce structures of A to E. |
12 |
| 987 | ( begin{array}{cc}boldsymbol{O H} & boldsymbol{C H}_{3} \ boldsymbol{C H}_{3}-boldsymbol{C H}-boldsymbol{C} boldsymbol{H}-boldsymbol{C H}-boldsymbol{C H O} & mid \ & boldsymbol{O H}end{array} ) The IUPAC name is: A. 4 -hydroxy-1-methylpentanal B. 3, 4-dihydroxy-2-methylpentanal c. 2 -hydroxy- 4 -methylpentanal D. 2, 3-dihydroxy-4-methylpentanal |
12 |
| 988 | The number of moles of Grignard reagent consumed per mole of the compound is: ( A ) B. ( c ) ( D ) |
12 |
| 989 | Ozonolysis of which molecule give this product? A. 1,2 dimethyl cyclohexyne B. Dodecene c. 1,2 dimethyl cyclohexene D. None of these |
12 |
| 990 | ( boldsymbol{R} boldsymbol{C O C l}+boldsymbol{H}_{2} stackrel{boldsymbol{P d}+boldsymbol{B a S O}_{4}}{longrightarrow} boldsymbol{A} stackrel{boldsymbol{H C N}}{longrightarrow} boldsymbol{B} stackrel{boldsymbol{H}_{3} boldsymbol{O}}{longrightarrow} ) ( C ) In the reaction sequence ( A, B ) and ( C ) are given by the set:- ( begin{array}{llll}text { A. } R C H O, & R C H(O H) C N, & R C H(O H) C H_{2} N H_{2}end{array} ) в. ( R C H O, quad R C H(O H) C N, quad R C H(O H) C O O H ) ( c ) ( mathrm{RCHO} ) D. ( R C H O, quad R-C H_{2}-C N, quad R-C H_{2}-C O O H ) |
12 |
| 991 | The IUPAC name of the given compound is : A. ( 4- ) hydroxy-z-pentanone B. 2-hydroxy-4-pentanone c. 2-oxo-4-pentanol D. 4-keto-2-pentanol |
12 |
| 992 | Which of the following statement is true statement? A. Aldehydes and ketones have lower boiling points than alcohols and carboxylic acids of comparable molecular masses. B. Aldehydes and ketones have higher boiling points than alcohols and carboxylic acids of comparable molecular masses. C. Aldehydes and ketones have lower boiling points than alcohols but higher boiling points than carboxylic acids of comparable molecular masses. D. Aldehydes and ketones have higher boiling points than alcohols but lower boiling points than carboxylic acids of comparable molecular masses. |
12 |
| 993 | CUCI All aromatic compound ‘A’ (molecular formula C H20) gives positive 4. *-UNP test. It gives a yellow precipitate of compound ‘B’ on treatment with iodine and sodium hydroxide solution. Compound ‘A’ does not give Tollen’s or Fehling’s test. On drastic oxidation with potassium permanganate it forms a carboxylic acid ‘C’ (molecular formula C H202), which is also formed alongwith the yellow compound in the above reaction. Identify A, B and C and write all the reactions involved. Thinking ProCOC |
12 |
| 994 | ( boldsymbol{A} stackrel{boldsymbol{H C N}}{longrightarrow} boldsymbol{B} stackrel{boldsymbol{H}_{3} boldsymbol{O}^{+}}{longrightarrow} boldsymbol{L} boldsymbol{a} boldsymbol{c t i c} boldsymbol{a c i d} ) Identify ( boldsymbol{A} ) A. ( H C H O ) в. ( C H_{3} C H O ) с. ( C_{6} H_{5} ) СНО D. ( C H_{3} ) СОСН ( _{3} ) |
12 |
| 995 | ( boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C} boldsymbol{H}_{2}-underset{boldsymbol{O}}{|}-boldsymbol{C} boldsymbol{H}_{3} frac{N a N boldsymbol{O}_{2}}{boldsymbol{H} C l} ) Major product of this reaction is: ( mathbf{A} . ) ( C H_{3} C H-C_{1} H-C-C H_{3} ) ( N O ) B. [ C H_{3}-C H_{2}-C-C H=N-O H ] ( c ) ( C H_{3}-underset{N-O H}{C}-stackrel{0}{N}-C H_{3} ) D. ( C H_{3}-C H_{2}-underset{N-O H}{|}-C H_{3} ) |
12 |
| 996 | In this given reaction, glycerol + oxalic acid ( stackrel{210^{circ} mathrm{C}}{rightarrow}[mathrm{X}] ) Product ( [X] ) is : A. нсоон B. allyl alcohol ( c ) ( mathrm{CHOH} ) D. |
12 |
| 997 | Complete and name the following reaction. [ c=0 frac{mathbf{Z n}-mathbf{H g}}{mathbf{H C l}} ] |
12 |
| 998 | The decreasing order of boiling points of the following is : (।) ( R C O C l,(|)(R C O)_{2} O,(| I) ) ( R C O N H_{2},(I V) R C O O H ) A . ।> IV > || > II B. |||>|| > IV > | c. IV > III > I> II D. II >|>||| > IV |
12 |
| 999 | What are the reaction sequences of glucosazone formation? |
12 |
| 1000 | Correct order of Acidic strength: ( A ). iii ( > ) ii ( >i> ) iv B. i> iii > ii > iv c. iv ( >i> ) ii ( > ) iii D. iii ( > ) iv ( >i> ) ii i |
12 |
| 1001 | Aldol condensation reaction is not given by: A. ( C_{6} H_{5} C H_{2} C H O ) в. ( C_{6} H_{5} C H O ) c. ( C H_{3} C H O ) D. ( C H_{3} C O C H_{3} ) |
12 |
| 1002 | is A. An ester B. An anhydride C. Acetal D. Hemiacetal |
12 |
| 1003 | Match the column I with column II. | 12 |
| 1004 | n-Propyl alcohol is obtained on hydrolysis of the adduct obtained by the reaction of: A. EtMgX and HCHO B. MeMgX and ( left(C H_{2}right)_{2} O ) ( mathrm{C} cdot mathrm{EtMgX} ) and ( mathrm{O}_{2} ) D. мeMgx and ( C H_{3} C H O ) |
12 |
| 1005 | Assertion Both o-hydroxy benzaldehyde and phydroxy benzaldehyde have same molecular weight and show H-bonding. Reason Melting point of p-hydroxy benzaldehyde is more than o-hydroxy benzaldehyde. |
12 |
| 1006 | Assertion Aromatic aldehydes and formaldehyde undergo Cannizzaro reaction. Reason Aromatic aldehydes are almost as reactive as formaldehyde. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
12 |
| 1007 | 5 5 5 |
12 |
| 1008 | Which of the following statement is true? A. Benzaldehyde is used in perfumery industry B. Formaldehyde is used for silvering mirrors C. Acetone is used as a commercial solvent D. All of the above |
12 |
| 1009 | ( M e_{3} C-stackrel{V}{C}-M e frac{[O]}{Delta} ) Find out the major product of the reaction. |
12 |
| 1010 | The decreasing order for acidic strength ¡s: ( mathbf{A} cdot N O_{2} C H_{2} C O O H>N C C H_{2} C O O H> ) ( F C H_{2} C O O H>C l C H_{2} C O O H ) B ( cdot F C H_{2} C O O H>N C C H_{2} C O O H> ) ( N O_{2} C H C O O H>C l C H_{2} C O O H ) ( mathrm{c} cdot mathrm{N} mathrm{O}_{2} mathrm{CH}_{2} mathrm{COOH}>mathrm{FCH}_{2} mathrm{COOH}> ) ( C N C H_{2} C O O H>C l C H_{2} C O O H ) D. ( C N C H_{2} C O O H>O_{2} N C H_{2} C O O H> ) ( F C H_{2} C O O H>C l C H_{2} C O O H ) |
12 |
| 1011 | How many equivalents of HCHO are formed by oxidative cleavage of one equivalent of D-glucose by excess of HIO in water? |
12 |
| 1012 | What is the compound ( A ? ) A. Oxalic acid B. Malonic acid c. Succinic acid D. Adipic acid |
12 |
| 1013 | WELILA Q. 29 Compound ‘A’ was prepared by oxidation of compou prepared by oxidation of compound ‘B’ with alkaline KM 04. Compound ‘A on reduction with lithium aluminium hydride gets converted back to compound ‘B. When compound ‘Aisne compound B in the presence of H.SO, it produces fruity smell of compound C to which family the compounds ‘A’, ‘B’ and ‘C belong to: Thinking Process |
12 |
| 1014 | The IUPAC name of the following compound is ethyl ( 4- ) bromo -3 chlorobenzoate A. True B. False |
12 |
| 1015 | toppr Q Type your question ( A ) ( B ) ( c ) ( D ) |
12 |
| 1016 | Assertion When PhCHO is made to react in ( O D^{ominus} / D_{2} O ) no ( D ) is incorporated into the ( C H_{2} ) of ( P h C H_{2} O H, P h C O O^{-} ) mixture during cannizaro’s reaction Reason Intermolecular ( boldsymbol{H}^{ominus} ) transfer takes place in the rate determining step, with out getting free in solution A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is incorrect but Reason is correct D. Both Assertion and Reason are correct |
12 |
| 1017 | Vinegar is present in acetic acid. Curd contains ( _{text {the acid. }} ) A . lactic acid B. tartaric acid c. citric acid D. none of these |
12 |
| 1018 | In the following reaction, ( P ) gives two products ( Q ) and ( R ), each in ( 40 % ) yield f the reaction is carried out with ( 420 m g ) of ( P . ) the reaction yields ( 108.8 m g ) of ( Q . ) The amount of ( R ) produced in the reaction is closest to: A. ( 97.6 mathrm{mg} ) B. ( 108.8 mathrm{mg} ) c. ( 84.8 mathrm{mg} ) D. ( 121.6 mathrm{mg} ) |
12 |
| 1019 | Identify the correct order of reactivity in electrophilic substitution reactions of the following compounds: ( A cdot|>||>|||>mid V ) B. IV>|||> || > | c. ॥>।>॥|> >V D. II>III>1>IV |
12 |
| 1020 | Benzaldehyde is used: A. as a flavouring agent for food B. in the manufacture of triphenylmethane dyes like malachite green C. as a starting material for the preparation of cinnamic acid D. all of these |
12 |
| 1021 | In addition reactions of aldehydes, the carbonyl carbon atom changes from: A ( cdot s p^{3} ) to ( s p^{2} ) B ( cdot s p^{2} ) to ( s p^{3} ) c. ( s p ) to ( s p^{3} ) D. ( s p^{3} ) to sp |
12 |
| 1022 | Arrange the following compounds in the increasing order of their boiling points. ( boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H} boldsymbol{O}, boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H} ) ( boldsymbol{O}-boldsymbol{C}_{2} boldsymbol{H}_{5}, boldsymbol{C}_{2} boldsymbol{H}_{5} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C}_{2} boldsymbol{H}_{5} ) A ( cdot C H_{3} C H_{2} C H_{2} C H_{2} C H_{3}<H_{5} C_{2}-O-C_{2} H_{5}< ) ( C H_{3} C H_{2} C H_{2} C H OH_{5} C_{2}-O-C_{2} H_{5}> ) ( C H_{3} C H_{2} C H_{2} C H O<C H_{3} C H_{2} C H_{2} C H_{2} O H ) c. ( C H_{3} C H_{2} C H_{2} C H_{2} C H_{3}<H_{5} C_{2}-O-C_{2} H_{5}C H_{3} C H_{2} C H_{2} C H_{2} O H ) D. ( C H_{3} C H_{2} C H_{2} C H_{2} C H_{3}>H_{5} C_{2}-O-C_{2} H_{5}C H_{3} C H_{2} C H_{2} C H_{2} O H ) |
12 |
| 1023 | ( y=2 x ) ( y= ) |
12 |
| 1024 | The carbonyl compound producing an optically active product by reaction with ( boldsymbol{L} boldsymbol{i} boldsymbol{A} boldsymbol{l} boldsymbol{H}_{4} ) is: A. propanone B. butanone c. 3-pentanone D. benzophenone |
12 |
| 1025 | ( begin{array}{ll}text { Column I } & text { Column II } \ text { Compound } & text { Uses }end{array} ) | 12 |
| 1026 | Question 8. Why are carboxylic acids more acidic than alcohols or phenols although all of them have hydrogen atom attached to a oxygen atom (-0-H)? |
12 |
| 1027 | Which of the following compounds will show the maximum enol content? A. ( C H_{3} C O C H_{2} C O C H_{3} ) в. ( C H_{3} ) СОСН( _{3} ) c. ( C H_{3} C O C H_{2} C O N H_{2} ) D. ( C H_{3} C O C H_{2} C O O C_{2} H_{5} ) |
12 |
| 1028 | A mixture of toluene, benzoic acid, aniline and phenol was dissolved in diethyl ether and extracted with ( 5 % N a H C O_{3} ) solution. This extract was acidified until a white crystalline compound appeared. What is the identity of this compound? A. Toluene B. Benzoic acid c. Aniline D. Phenol |
12 |
| 1029 | How is propanone converted into- (i) Propan – 2 – ol (ii) 2 – Methylpropan ( -2- ) ol? |
12 |
| 1030 | The structures of two compounds and ( (I I) ) are given below. Which statement is correct? ( boldsymbol{F}_{2} boldsymbol{C}=boldsymbol{C}=boldsymbol{C} boldsymbol{F}_{2}(boldsymbol{I}) ) and ( boldsymbol{F}_{2} boldsymbol{C}=boldsymbol{C}= ) ( boldsymbol{C}=boldsymbol{C} boldsymbol{F}_{2}(boldsymbol{I} boldsymbol{I}) ) A. Reductive ozonolysis of both gave the same product B. Reductive ozonolysis of both gave different products c. Reductive and oxidative ozonolysis of both gave different products. D. Reductive and oxidative ozonolysis of (I) gave the same product but of ( (I I) ) gave different products. |
12 |
| 1031 | Explain Rosenmund’s reduction of benzoyl chloride. | 12 |
| 1032 | Question 13. A hydrocarbon ‘A’ (CH) on reaction with HCl gives a compound ‘B’ (C,H,CI), which on reaction with 1 mole of NH3 gives compound ‘C” (CAHUN). On reacting with NaNO, and HCl followed by treatment with water, compound ‘C’ yields an optically active alcohol, ‘D’. Ozonolysis of ‘A’ gives 2 moles of acetaldehyde. Identify compounds A’ to D’. Explain the reactions involved. |
12 |
| 1033 | The name of the compound ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H O} ) is: A. propanal B. propanone c. ethanol D. ethanal |
12 |
| 1034 | Which compound gives reaction with 2,4-dinitro phenyl hydrazine? A. в. ( c ) D. All of these |
12 |
| 1035 | The major product of the following reaction is: ( A ) ( B ) ( c ) ( D ) |
12 |
| 1036 | 28. C H2COOH + CH,Mgi —? (a) CH,COOMg) (b) CH, (c) Both (a) and (b) (d) None of these |
12 |
| 1037 | Which acid is used in rubber industry as a coagulating agent? A. Methanoic acid B. Ethanoic acid c. Propanoic acid D. Butanoic acid |
12 |
| 1038 | On acid hydrolysis, propane nitrile gives A. Propanal B. Acetic acid c. Propionamide D. Propanoic acid |
12 |
| 1039 | Name one aldehyde and ketone with high boiling point and one with low boiling point. | 12 |
| 1040 | ( boldsymbol{P h C} equiv boldsymbol{C M e} frac{boldsymbol{H}_{3} boldsymbol{O}^{+}, boldsymbol{H} boldsymbol{g}^{2+}}{rightarrow} ) Identify the product in the reaction. ( mathbf{A} cdot P h C H_{2} C H_{2} C H O ) в. ( operatorname{Ph} mathrm{hOCH}_{2} mathrm{CH}_{3} ) ( mathbf{c} cdot P h C H_{2} C O C H_{3} ) D. Рh СОСОМ |
12 |
| 1041 | A compound with molecular formula ( C_{8} H_{18} O_{4} ) does not give litmus test and does not give colour with ( 2,4- ) DNP. It reacts with excess ( M e C ) OCl to give a compound whose vapour density is 152 Compound ( A ) contains how many hydroxy groups? A . 1 B. 2 ( c .3 ) D. 4 |
12 |
| 1042 | Arrange the following acids in decreasing order of ( left[boldsymbol{H}^{+}right] ) conc. ( mathrm{cH}_{2}=mathrm{cHCH}_{2}-mathrm{cooH} quad mathrm{cH}_{3} mathrm{CH}_{2} mathrm{coot} ) (II A ( . I>I I>I I I ) В. ( I I>I I I>I ) c. ( I I>I>I I I ) D. ( I I I>I I>I ) |
12 |
| 1043 | Which of the following can be used as a solvent for cellulose acetate, cellulose nitrate, and celluloide? A. Formaldehyde B. Acetaldehyde c. Acetic acid D. Acetone |
12 |
| 1044 | Which of the following is the correct description of ( C ? ) A. It is ethanolic acid B. It is 2-hydroxy ethanal c. It is 2 -hydroxy oxirane D. It can be either ( B ) or ( C ) |
12 |
| 1045 | Final major product of this reaction is: A ( cdot C H_{3} C_{H_{2}}^{14} C H_{3} ) В ( cdot C_{H_{3}}^{14} C H_{2} C H_{3} ) ( mathbf{c} cdot c_{H_{3}} C_{H_{2}-C H O}^{14}-C H O ) D. ( C_{H_{3}-C H_{2}-C H O}^{14}-C_{3}-C H O ) |
12 |
| 1046 | Consider the following reaction sequence, ( boldsymbol{C H}_{3} boldsymbol{C} equiv boldsymbol{C H} frac{2 operatorname{mole}}{boldsymbol{H C l}} boldsymbol{A} frac{boldsymbol{H e a t}}{boldsymbol{a q . K O H}} boldsymbol{B} ) The products ( (A) ) and ( (B) ) are, respectively: ( mathbf{A} cdot(A): C H_{3} C H_{2} C H C l_{2} ) and ( (mathbf{B}): C H_{3} C H_{2} C H O ) B . (A): ( C H_{3} C(C l)_{2} C H_{3} ) and (В): ( C H_{3} C O C H_{3} ) c. ( (mathrm{A}): C H_{3} C(C l)_{2} C H_{3} ) and (В): ( C H_{3} C equiv C H ) D・(A): ( C H_{3} C H(C l) C H_{2} C l ) and (В) ( : C H_{3} C H(O H) C H_{2} C l ) |
12 |
| 1047 | ( boldsymbol{C H} equiv boldsymbol{C}-boldsymbol{C H}_{3} frac{40 % boldsymbol{H}_{2} boldsymbol{S O}_{4}}{1 % boldsymbol{H g S O}_{4}} boldsymbol{B} ) Then, ( B ) is : A. acetone B. trichloroacetone c. acetaldehyde D. chloral |
12 |
| 1048 | Cyanohydrin of which compound on hydrolysis will give lactic acid? A. ( C_{6} H_{5} C H O ) в. ( H C H O ) c. ( C H_{3} C H O ) D. ( C H_{3} C H_{2} C H O ) |
12 |
| 1049 | a) An organic compound (A) of molecular formula ( C_{7} H_{6} O ) is not reduced by fehling’s solution but will undergo cannizaro reaction. Compound (A) reacts with aniline to give compound (B) compound (A) also reacts with ( C l_{2} ) in the absence of catalyst to give compound (C). Identify ( A, B ) and ( C ) and explain the reactions. b) The ( K_{a} ) of propanoic acid is ( 1.34 times ) ( 10^{-5} . ) What is the ( p H ) of a solution containing 0.5M propanoic acid and 0.5M sodium propanoate? |
12 |
| 1050 | Name the following compounds according to the IUPAC system or nomenclature: ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C O C H}left(boldsymbol{C}_{2} boldsymbol{H}_{5}right) boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{C l} ) |
12 |
| 1051 | If the following transformation is done with an alkene as an intermediate product, an aldehyde with ( x ) number of carbons is produced alongside with benzaldehyde. What is ( x ) ? |
12 |
| 1052 | ( mathrm{CH}_{3}-mathrm{C}_{mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{C}}^{mathrm{O}} mathrm{CH}_{3} ) | 12 |
| 1053 | Assertion Malonic acid ( left(boldsymbol{H} boldsymbol{O} boldsymbol{O} boldsymbol{C}-boldsymbol{C} boldsymbol{H}_{2}-right. ) COOH ) does not form cyclic anhydride on heating. Reason It is like ( beta ) – keto acid, on heating it prefer to decarboxylate. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion c. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
12 |
| 1054 | An aromatic hydrocarbon has the molecular formula ( C_{10} H_{14} . ) Upon oxidation with boiling alkaline ( boldsymbol{K} boldsymbol{M} boldsymbol{n} boldsymbol{O}_{4} ) followed by acidification, it yields benzene dicarboxylic acid. The total isomers for ( C_{10} H_{14} ) are: ( mathbf{A} cdot mathbf{9} ) B. 8 ( c cdot 7 ) D. 6 |
12 |
| 1055 | Select the correct statements. ( mathbf{x} ) This question has multiple correct options ( A ) ( (mathbf{Y}) ) B. ( (Z) ) has three carbonyl groups ( c ) D. Formation of ( (X) ) involves equilibrium mixture of the iminium salt and the acylated enamine |
12 |
| 1056 | How will you convert ethanal into the following compounds? But-2-enoic acid |
12 |
| 1057 | Write IUPAC name of the following compound. A. 3 -Hydroxy-2-methylpentanoic acid B. 4 -Methyl-3-hydroxypentanoic acid c. 3 -hydroxy-4-methylpentanoic acid D. 2-Methyl-2-hydroxypentanoic acid |
12 |
| 1058 | An aldehyde on oxidation gives A . an acid B. an alcohol c. an ether D. a ketone |
12 |
| 1059 | 2.24 Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzal chloride and then benzaldehyde from it. + |
12 |
| 1060 | Arrange the following compound in order of decreasing acidic strength. | 12 |
| 1061 | An organic compound with the molecular formula ( C_{8} H_{8} O ) forms ( 2,4- ) DN P derivative, reduces Tollen’s reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2-benzenedicarboxylic acid. The organic compounds is A. 2 -ethylbenzaldehyde B. 2-methylbenzaldehyde c. acetophenone D. 3-methylbenzaldehyde E. henylacetaldehyde |
12 |
| 1062 | Which of the following compound is more acidic? ( ^{mathbf{A}} cdot_{C H_{2}-C}^{circ}-O H ) No в. ( _{C H_{2}}-C H_{2}-stackrel{circ}{C}-O H ) ( N O_{2} ) 2 c. [ begin{array}{l}C H_{2}-C H_{2}-C-O H \ text { I }end{array} ] D. [ C H_{3}-begin{array}{c}c_{1} \ _{1} \ C \ C lend{array}-C_{-} O H ] |
12 |
| 1063 | An organic acid ( boldsymbol{A}left(boldsymbol{C}_{5} boldsymbol{H}_{10} boldsymbol{O}_{2}right) ) reacts with ( B r_{2} ) in presence of phosphorus to produce a resolvable compound B. B on dehydrobromination yields C. C does not show geometrical isomerism and on decarboxylation gives an alkene D. D on ozonolysis gives ( mathrm{E} ) and ( mathrm{F} ). Compound ( mathrm{E} ) gives positive Schiff’s test but F does not. Give structures of ( A ) to ( F ) |
12 |
| 1064 | Which of the following carboxylic acid is most acidic in character – A. o-methyl benzoic acid B. m-methyl benzoic acid c. p-methyl benzoic acid D. Benzoic acid |
12 |
| 1065 | How will you carry out the following reactions? Write relevant balanced equations and name the reactions. (i) Acetyl chloride to acetaldehyde (ii) Acetamide to methyl-amine |
12 |
| 1066 | Give product in following reactions | 12 |
| 1067 | ( boldsymbol{O} ) ( boldsymbol{P h}-hat{boldsymbol{C}}-boldsymbol{O}-boldsymbol{C P h}_{3} frac{boldsymbol{H}_{3}^{18} boldsymbol{O} oplus}{longrightarrow} ) Product of this reaction is: B. ( o^{18} ) ( P h-C-O H+P h_{3} C-O H ) c. ( _{text {I }}^{o} ) Ph ( -C-O H+P h_{3} C-O H ) D. [ P h-C-O H+P h_{3} C-O H ] |
12 |
| 1068 | ( boldsymbol{H} boldsymbol{C} equiv boldsymbol{C} boldsymbol{H} frac{(i) mathbf{2} boldsymbol{N} boldsymbol{a}}{(i i) mathbf{2} C boldsymbol{O}_{2}}(boldsymbol{A}) frac{boldsymbol{H}_{2} / boldsymbol{P} boldsymbol{d}}{boldsymbol{B} boldsymbol{a} boldsymbol{S} boldsymbol{O}_{4}}(boldsymbol{B}) ) What is B? ( mathbf{A} cdot H_{2} C=C H-C O O^{-} N a^{+} ) ( mathbf{B} cdot: H_{3} C-C H_{2}-C O O^{-} N a^{+} ) ( mathbf{c} cdot H_{2} C=C H-C H_{2} O H ) ( mathbf{D} cdot H_{3} C-C H_{2}-C H_{2} O H ) |
12 |
| 1069 | What is the reagent used in Etard reaction? A. Chromyl chloride B. Ethanoyl chloride c. ( S n C l_{2} ) and ( H C l ) D. Cadmium chloride |
12 |
| 1070 | Which is (are) correct out of the following: This question has multiple correct options |
12 |
| 1071 | Describe Fisher-Tropsch process in the manufacture of propanone with equations two uses. | 12 |
| 1072 | * Assertion (A) The a-hydrogen atom in carbonyl compounds is less acidic. Reason (R) The anion formed after the loss of a-hydrogen atom is resonance stabilised. |
12 |
| 1073 | What will be the prefix in the following compound? HOOC ( -boldsymbol{C H}_{2} ) ( boldsymbol{H O O C}-boldsymbol{C H}-boldsymbol{2}-boldsymbol{C H}-boldsymbol{C H}_{2}- ) ( boldsymbol{C H}_{2}-boldsymbol{C O O H} ) A. methycarboxy B. carboxymethyl c. carboxyethyl D. ethylcarboxy |
12 |
| 1074 | The compound(B) in the below reaction is : ( C_{2} H_{5} C l stackrel{K C N}{rightarrow} A^{H_{3}} Q^{+} B ) A. ethylene chloride B. acetic acid c. propionic acid D. ethyl cyanide |
12 |
| 1075 | If ( 3- ) hexanone is reacted with ( N a B H_{4} ) followed by hydrolysis with ( D_{2} O, ) the product will be : ( mathbf{A} cdot C H_{3} C H_{2} C H(O H) C H_{2} C H_{2} C H_{3} ) B. ( C H_{3} C H_{2} C D(O H) C H_{2} C H_{2} C H_{3} ) c. ( C H_{3} C H_{2} C H(O D) C H_{2} C H_{2} C H_{3} ) D. ( C H_{3} C H_{2} C D(O D) C H_{2} C H_{2} C H_{3} ) |
12 |
| 1076 | When propyne is treated with aqueous sulphuric acid in presence of mercuric sulphate, the major product is A. propanal B. propyl hydrogen sulphate c. propanol D. propanone |
12 |
| 1077 | 0 0.14 Treatment of compound Ph-0-0-Ph with NaOH solution yields (a) phenol (b) sodium phenoxide (c) sodium benzoate (d) benzophenone |
12 |
| 1078 | Complete the above reactions: A. Cyclohexanone B. Cyclohexanoic acid ( mathrm{C} ). Cyclopentanone D. Cypentanoic acid |
12 |
| 1079 | Find ( A ) and ( B ) | 12 |
| 1080 | Correct order of reactivity of following compounds towards Grignard reagent. ( mathbf{A} cdot mid>|>| 1 ) B. ( |>1>| 1 ) c. ( |>|>1 ) D. ( mid>| 1>11 ) |
12 |
| 1081 | The solvent used in Etard reaction during the formation of benzaldehyde from toluene is : A. ( C H_{3} ) СООН в. ( H_{2} ) О c. La. ( N H_{3} ) D. ( C S_{2} ) |
12 |
| 1082 | The major product formed when ( 2- ) butene is reacted with ( O_{3} ) followed by treatment with ( Z n / H_{2} O ) is A. ( C H_{3} ) СООН в. ( C H_{3} C H O ) c. ( C H_{3} C H_{2} O H ) D. ( C H_{2}=C H_{2} ) |
12 |
| 1083 | Why is the conversion of ethanol to ethanoic acid an oxidation reaction? A. Carbon is oxidized. B. Hydrogen oxidation number is changed. c. carbon is reduced D. carbon undergoes disproportination |
12 |
| 1084 | The reaction of toluene with ( C l_{2} ) in presence of ( F e C l_{3} ) gives predominantly: A. benzoyl chloride B. benzyl chloride c. ( o ) -and ( p ) -chlorotoluene D. ( m ) -chlorotoluene |
12 |
| 1085 | General formula of aldehyde is: A. ( C_{n} H_{2 n} O_{2} ) в. ( C_{n} H_{2 n} O ) c. ( C_{n} H_{2 n+1} O ) D. ( C_{n} H_{2 n+2} O ) |
12 |
| 1086 | The compounds shown below have similar weights but significantly different boiling points. Match the compound with its boiling point. (Boiling points ( left.left(^{o} Cright) 28,57,100,141right) ) A. Methyl acetate=100, 2-butanol=141, 2-methyl butane=28, Propanoic acid=57 B. Methyl acetate=57, 2-butanol=100, 2-methyl butane=28, Propanoic acid=141 c. Methyl acetate=28, 2-butanol=100, 2-methyl butane=57, Propanoic acid=141 D. Methyl acetate=141, 2-butanol=57, 2-methy butane=28, Propanoic acid=100 |
12 |
| 1087 | The main product obtained in the reaction of acetamide and ( boldsymbol{H} boldsymbol{N} boldsymbol{O}_{2} ) is: A. ( C H_{3} C N ) в. ( C H_{3} N C ) ( mathbf{c} cdot C H_{3} N H_{2} ) D. ( C H_{3} ) СООН |
12 |
| 1088 | ( P h-stackrel{0}{C}-O H stackrel{S O C l_{2}}{longrightarrow}(A) underset{P d-B a S O_{4}}{C}(B) ) Product (B) is: A. [ P h-C_{-} H ] в. ( P h-C H_{2}-O H ) c. ( P h-C H_{2}-C l ) D. ( P h-C H=C H_{2} ) |
12 |
| 1089 | Which of the following is the flavouring agent for food, beverages etc? A. Acetone B. Formaldehyde c. Benzaldehyde D. Phenol |
12 |
| 1090 | The correct IUPAC name of the following compound is: |
12 |
| 1091 | Name the product obtained when alcohol is added to a carbonyl group in presence of dry ( boldsymbol{H} boldsymbol{C l} ) |
12 |
| 1092 | toppr Q Type your question A ( x ) reaction but not haloform reaction, whereas ( S ) undergoes haloform reaction but not Cannizzaro reaction. (i) ( P frac{i) O_{3} / C H_{2} C l_{2}}{i i) Z n / H_{2} O} underset{left(C_{8} H_{8} Oright)}{Q} ) (ii) ( boldsymbol{R} frac{i) boldsymbol{O}_{3} / boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C l}_{2}}{boldsymbol{i} boldsymbol{i}) boldsymbol{Z} boldsymbol{n} / boldsymbol{H}_{2} boldsymbol{O}} boldsymbol{S}_{left(boldsymbol{C}_{8} boldsymbol{H}_{8} boldsymbol{O}right)} ) The option(s) with suitable combination of ( boldsymbol{P} ) and ( boldsymbol{R} ), respectively, is ( (operatorname{are}) ) This question has multiple correct options ( A ) B. c. D. |
12 |
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