We provide alcohols, phenols and ethers practice exercises, instructions, and a learning material that allows learners to study outside of the classroom. We focus on alcohols, phenols and ethers skills mastery so, below you will get all questions that are also asking in the competition exam beside that classroom.
List of alcohols, phenols and ethers Questions
| Question No | Questions | Class |
|---|---|---|
| 1 | topp ( Q ) Type your question xture of (A) and (B |
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| 2 | The above compound on strong heating gives: [ begin{array}{c} boldsymbol{o}-boldsymbol{T} boldsymbol{s} \ boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C} boldsymbol{H}-boldsymbol{C H}_{3} end{array} ] ( A ) [ begin{array}{c} mathbf{o} mathbf{H} \ mathbf{C H}_{3}-mathbf{C H}_{2}-mathbf{C} mathbf{H}-mathbf{C H}_{3} text { and } mathbf{C H}_{3} end{array}langlemathbf{O}rangle-mathbf{s} mathbf{o}_{3} mathbf{H} ] в. [ begin{array}{c} mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}-mathrm{SO}_{3} mathrm{H} text { and } mathrm{CH}_{3}langlemathrm{O}rangle text { of } \ mathrm{CH}_{3} end{array} ] ( c ) [ mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}=mathrm{CH}_{2} text { and } mathrm{CH}_{3}langlemathrm{O}rangle-mathrm{so}_{3} mathrm{H} ] D. [ mathrm{CH}_{3}-mathrm{CH}=mathrm{CH}-mathrm{CH}_{3} text { and } mathrm{CH}_{3}-langlemathrm{O}rangle-mathrm{so}_{3} mathrm{H} ] |
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| 3 | The reduction of phenol to benzene is carried out with sodium borohydride. A. True B. False |
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| 4 | Write the mechanism of the reaction of ( H I ) with methoxymethane. |
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| 5 | Conversion of phenol to salicylic acid and to salicyaldehyde are known as? (respectively) A. Reimer – Tiemann reaction and Kolbe’s reaction B. Williamson’s synthesis and Hydroboration-oxidation c. Kolbe’s reaction and Williamson’s synthesis D. Kolbe’s reaction and Reimer – Tiemann reaction |
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| 6 | The reaction of ( boldsymbol{C H}_{3} boldsymbol{O C}_{2} boldsymbol{H}_{5} ) with ( boldsymbol{H} boldsymbol{I} ) gives: ( mathbf{A} cdot C H_{3} I ) в. ( C_{2} H_{5} O H ) c. ( C H_{3} I+C_{2} H_{5} O H ) D. ( C_{2} H_{5} I+C H_{3} O H ) |
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| 7 | The IUPAC name of ( boldsymbol{C H}_{3}- ) ( boldsymbol{C}left(boldsymbol{C H}_{3}right)(boldsymbol{O H}) boldsymbol{C H}_{2}-boldsymbol{C H}left(boldsymbol{C H}_{3}right)_{2} ) is: A. 2,4-Dimethylpentan-2-ol B. 2,4-dimethylpentan-4-ol c. 2, 2-dimethylbutane D. 2,4,4-trimethylbutan-2-ol |
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| 8 | Which of the following is wood alcohol? A. ( C H_{3} O H ) в. ( C_{2} H_{5} O H ) c. 1-Butanol D. 2-Methyl-1-propanol |
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| 9 | ( left(boldsymbol{C H}_{3}right)_{3} boldsymbol{C O C H}_{3} ) and ( boldsymbol{C H}_{3} boldsymbol{O C}_{2} boldsymbol{H}_{5} ) are treated with hydroiodic acid.The fragments obtained after reactions are respectively: A ( cdotleft(C H_{3}right)_{3} C I+C H_{3} O H ; C H_{3} I+C_{2} H_{5} O H ) B. ( left(C H_{3}right)_{3} C I+C H_{3} O H ; C H_{3} O H+C_{2} H_{5} I ) c. ( left(C H_{3}right)_{3} C O H+C H_{3} I ; C H_{3} O H+C_{2} H_{5} I ) D. ( C H_{3} I+left(C H_{3}right)_{3} C O H ; C H_{3} I+C_{2} H_{5} O H ) |
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| 10 | topp 5 Q type your question 4 ( B ) ( c ) ( D ) |
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| 11 | Methylphenyl ether can be obtained by reacting: A. phenolate ions and methyl iodide B. methoxide ions and bromobenzene c. methanol and phenol D. bromo benzene and methyl bromide |
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| 12 | Phenol ( frac{(i) N a O H}{(i i) C O_{2} / 140^{circ} C} A frac{H^{+} / H_{2} O}{longrightarrow} ) ( boldsymbol{B} frac{boldsymbol{A} boldsymbol{l}_{2} boldsymbol{O}_{3}}{boldsymbol{C H}_{3} operatorname{COOH}, boldsymbol{Delta}} boldsymbol{C} ) In this reaction, the end product ( C ) is: A. salicylaldehyde B. salicylic acid c. phenyl acetate D. aspirin |
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| 13 | Which one of the following reagents can not be used to oxidise primary alcohols to aldehydes? ( mathbf{A} cdot C r O_{3} ) in anhydrous medium B. ( K M n O_{4} ) in acidic medium c. Pyridinium chlorochromate D. Heat in presence of Cu at 573 k |
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| 14 | Which one of the following reaction conditions are used for preparing diethyl ether from ethyl alcohol? A. ( H I / 200^{circ} C ) в. Сопс.Н( _{2} S O_{4} / 140^{circ} C ) c. ( N a O H / 70^{circ} C ) D. ( N a O C_{2} H_{5} / 27^{circ} C ) |
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| 15 | 138. Suggest the product of following reaction: o OH 01 Home 1. Hg(OAC)2 2. NaBHA OH OHgOAC (a) (b) OH (c) (d) All of these |
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| 16 | Question 28. Write the equation of the reaction of hydrogen iodide with: (i) l-propoxypropane (ii) methoxybenzene and (iii) benzyl ethyl ether. Alcohols and alkyl or aryl iodides are formed. Generally primary halide (or lower halide) is formed in this reaction. |
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| 17 | The most suitable method of separation of equal ( (1: 1) ) mixture of ortho- nitrophenol and para-nitrophenol is: A. Crystallisation B. Distillation c. Sublimation D. chromatography |
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| 18 | toppr Q Type your question ( A ) 3 ( c ) ( D ) |
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| 19 | In the preparation of alkene from alcohol using ( A l_{2} O_{3} ) which is effective factor? A . Porosity of ( A l_{2} O_{3} ) B. Temperature c. concentration D. surface area of ( A l_{2} O_{3} ) |
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| 20 | The ether when treated with ( H ) produces ( bigcircrangle-_{0}-mathrm{cH}_{2}-langlebigcircrangle ) ( bigcircrangle-mathrm{c} mathrm{H}_{2} ) ( bigcircrangle-mathrm{cH}_{2} mathrm{o} ) ( bigcircrangle ) ( sqrt{0}-0 ) |
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| 21 | The compound (s) used as an antifreeze in radiators of automobiles is/are? This question has multiple correct options A. methyl alcohol B. ethyl alcohol c. ethyl alcohol + water D. methyl alcohol + water |
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| 22 | Which of the following statements is wrong about hydroboration oxidation? A. The reaction proceeds through cyclic intermediate transition state and syn addition takes place B. Reagent diborane in ether (THF) exists as borane- THF complex C . Diborane in polar solvent ( left(H_{2} Oright) ) exists as ( left[B H_{2}right]^{oplus}left[B H_{4}right]^{ominus} ) D. The reaction proceed through ionic intermediate and syn addition takes place. |
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| 23 | Q Type your question The compound A is: ( A ) 3 ( c ) ( D ) |
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| 24 | ( boldsymbol{R}-boldsymbol{O H} stackrel{boldsymbol{P B r}_{3}}{boldsymbol{A}} ) ( boldsymbol{B} stackrel{boldsymbol{H C H O}}{longrightarrow} boldsymbol{C} stackrel{boldsymbol{H}^{+} / boldsymbol{H}_{2} boldsymbol{O}}{longrightarrow} boldsymbol{D} ) What are ( A, B, C & D ) respectively? ( mathbf{A} cdot R-B r, R-B r-M g, R-C H_{2} M g-B r, R- ) ( C H_{2} C H O ) B . ( R-B r, R-M g-B r, R-C H_{2}-O-M g-B r, R- ) ( C H_{2} C H O ) ( mathbf{c} cdot R-B r, R-M g-B r, R-C H_{2}-O-M g-B r, R- ) ( C H_{2} O H ) D. ( R-B r, R-M g-B r, R-C H_{2}-B r, R-C H_{2} O H ) |
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| 25 | What will be the products in following reactions? ( (mathbf{I}) ) ( (mathbf{I I}) ) ( (mathbf{I I I}) ) ( A ) B. ( c ) D. None |
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| 26 | Consider the following dehydration of alcohol OH H2PO4 Heat The important dehydration product(s) is/are |
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| 27 | Conversion of glucose to ethyl alcohol can be carried by: A. lactose B. invertase c. zymase D. diastase |
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| 28 | ( C_{6} H_{5} C l frac{N a O H}{text {High temperature and pressure}} ) ( boldsymbol{A} stackrel{boldsymbol{H C l}}{longrightarrow} boldsymbol{B} ) Identify ( A ) and ( B ) in the above reaction. |
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| 29 | Arrange the following in increasing order of boiling points | 12 |
| 30 | Which one of the following is a secondary alcohol? A. 2-methyl-2-propanol B. 1-propanol c. 1-butanol D. 2-pentanol |
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| 31 | Which row correctly shows a primary, secondary and a tertiary alcohol? 3 ( r ) ) |
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| 32 | ( boldsymbol{Y} stackrel{boldsymbol{N a}}{longleftrightarrow} boldsymbol{X} stackrel{boldsymbol{c o n c . H}_{2} boldsymbol{S O}_{4}, boldsymbol{4 1 3} boldsymbol{K}}{longrightarrow}left(boldsymbol{C}_{2} boldsymbol{H}_{5}right)_{2} boldsymbol{O} ) What are ( X ) and ( Y ) in the above reactions ( ? ) ( mathbf{A} cdot X-H_{3} C O H, Y-H_{3} C O N a ) B ( cdot X-C_{4} H_{9} O H, Y-C_{4} H_{9} O N a ) ( mathbf{c} cdot X-C_{2} H_{5} O H, Y-C_{2} H_{5} O N a ) D. ( X-C_{3} H_{7} O H, Y-C_{3} H_{7} O N a ) |
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| 33 | Question 14. What is tincture of iodine? What is its use? Cal..tian It is a 2:1. to colution of iodine (2 to 3 ner cant) n |
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| 34 | First member of ether series on reaction with sodium and liquified ammonia gives A. methanol+methane B. ethane+methanol c. ethanol D. ethane |
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| 35 | Identify the major product ( X ) obtained in the following reaction. ( mathbf{2}, mathbf{3}- ) dimethyl butan ( -mathbf{2}- ) ( boldsymbol{o l} stackrel{boldsymbol{C o n c . H}_{2} boldsymbol{S O}_{4}}{longrightarrow} boldsymbol{X} ) ( mathbf{A} ) B. ( c ) D. |
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| 36 | Phenol is an organic compound even though it is soluble in water due to the presence of: A. ionic bonding B. covalent bonding c. hydrogen bonding D. coordinate bonding |
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| 37 | Phenol is more acidic than: ( A ) B. ( mathbf{c} cdot C_{2} H_{2} ) D. Both (A) and (C) |
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| 38 | Statement-1: Alcoholic fermentation involves conversion of sugar into ethanol by the action of yeast. Statement-2: Fermentation involves the liberation of ( C O_{2} ) gas A. Statement-1 is True, Statement-2 is True; statementis a correct explanation for statement- – B. Statement-1 is True, Statement-2 is True; statementis NOT a correct explanation for statement-1 c. statement- – is True, statement-2 is False D. Statement-1 is False, statement-2 is True |
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| 39 | The acidic hydrolysis of ether (X) shown above is fastest when: A. one phenyl group is replaced by a methyl group B. one phenyl group is replaced by a para-methoxyphenyl group c. two phenyl groups is replaced by two para methoxyphenyl groups D. no structural change is made to X. |
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| 40 | Fusion of the sulfonic acids with sodium hydroxide initially gives the with the phenol being released by the subsequent addition of mineral acid. A. phenate B. sodium propanol c. phenone D. none of above |
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| 41 | Explain the Acidic nature of phenols and compare with that of alcohols. | 12 |
| 42 | Hydrogen chloride and ( S O_{2} ) are the side products in the reaction of ethanol with thionyl chloride. Which of the following is the main product in this reaction? A. ( C_{2} H_{5} O C_{2} H_{5} ) B. ( C_{2} H_{6} ) c. ( C H_{3} C l ) D ( cdot C_{2} H_{5} C l ) |
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| 43 | Give the IUPAC name of the following compound | 12 |
| 44 | ( sigma_{infty}^{text {and }} ) 0 0 0 |
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| 45 | Total number of methyl group present in product ( boldsymbol{A} ) is: [ underset{mathrm{Me}}{mathrm{N}}_{mathrm{O}}^{mathrm{OMe}}+2 bigwedge_{mathrm{Me}} widehat{mathrm{MgBr}} frac{mathrm{H}_{3} mathrm{O}^{oplus}}{longrightarrow} mathrm{A} ] |
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| 46 | Primary alcohols can be prepared from alkenes by: A. mercuration and demercuration of alkenes B. direct hydration of alkenes c. hydroboration of alkenes D. all of the above |
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| 47 | Which of the following products is formed in good yield by the reduction of methyl 4-oxo-hexanoate ( (M) ) with Li ( A l H_{4} ) in ether? A. Methyl 4-hydroxyhexanoate B. 1,4-Hexanediol c. 4-Hydroxyhexanal D. 6 -Methoxy-3-hexanone |
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| 48 | Which of the following isomers is more volatile: ( o ) -nitrophenol or ( p ) -nitrophenol? |
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| 49 | Identify the correct option(s) related with the physical properties of the unknown compounds [X] and [Y] formed as major and minor product respectively in the given reaction. This question has multiple correct options A. Water solubility of [Y] is greater than [X] B. Boiling point of [Y] is greater than [X] C. Melting point of [Y] is greater than [X] D. ( [x] ) is more volatile than ( [Y] ) |
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| 50 | Propene on hydration gives A. propan-1-ol B. propan-2-ol c. propanal D. methoxy ethane |
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| 51 | Explain the mechanism of alkaline hydrolysis of tert-butyl bromide with energy profile diagram. Define carbolic acid How carbolic acid is prepared from benzene sulphonic acid? |
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| 52 | I. Ethanol II. Acetic acid III. Phenol IV. Acetonitrile The acidity of compounds I-IV in water follows the order: A. ( I V<I<I I I<I I ) в. ( I<I I<I I I<I V ) c. ( I V<I<I I<I I I ) D. ( I V<I I I<I<I I ) |
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| 53 | In the following reaction, trace the position of isotopic ( ^{18} boldsymbol{O}: ) [ begin{array}{c} mathbf{0} \ mathbf{c H}_{3}-mathbf{C}-mathbf{0}-mathbf{H}+mathbf{C H}_{3} mathbf{C H}_{2}-mathbf{0}-mathbf{H} end{array} longrightarrow mathbf{C H}_{3}-mathbf{I}-mathbf{O}-mathbf{C H}_{2} mathbf{C H}_{3}+mathbf{H}_{2} mathbf{O} ] ( mathbf{A} cdot H_{2} O^{18} ) B. [ begin{array}{c} C H_{3}-C_{|}-O C H_{2} C H_{3} \ ^{18} O end{array} ] ( mathbf{c} ) [ begin{array}{c} C H_{3}-underset{| atop D}{C}-^{18} O C H_{2} C H_{3} \ O end{array} ] D. can be in all three above |
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| 54 | A hydrocarbon ( ^{prime} boldsymbol{A}^{prime}left(boldsymbol{C}_{3} boldsymbol{H}_{8}right) ) on treatment with chlorine in presence of sunlight yielded compounds ‘ ( B^{prime} ) as major product. Reaction of ( ^{prime} B^{prime} ) with aqueous KOH gave ( ^{prime} C^{prime} ) which on treatment with concentrated ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) yielded ( ^{prime} boldsymbol{D}^{prime} ) Hydrogenation of ( ^{prime} D^{prime} ) gave back ( ^{prime} A^{prime} ). The sequence of reactions involved in above conversion is: A. Substitution, Substitution, Addition, Dehydration B. Substitution, Substitution, Dehydration, Addition c. substitution, Dehydration, Addition, Addition D. Addition, Substitution, Dehydration, Substitution |
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| 55 | A compound ( C_{6} H_{14} O_{2} ) has two tertiary alcoholic groups. The IUPAC name of compound is: A. 2,3 – dimethyl – 1,2 – butanediol B. 3,3 – dimethyl- 1,2 – butanediol c. 2,3 – dimethyl- 2,3 – butanediol D. 2 – methyl – 2,3 – pentanediol |
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| 56 | 95 80 ( 0 % ) 99 90 |
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| 57 | Which of the following are the products shown by the reaction of methoxyethane with ( boldsymbol{H} boldsymbol{I} ) ? ( mathbf{A} cdot C_{2} H_{5} I+C H_{3} O H ) в. ( C H_{3} I+H_{2} O ) c. ( C_{2} H_{5} O H+H_{2} O ) D. ( C_{2} H_{5} O H+C H_{3} I ) |
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| 58 | 111. Major products of the following reaction: H (1) BH; THE (ii) H2O2, OH CH; | OH Н CH3 ОН CHY (d) All |
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| 59 | An organic compound used as a thermometric liquid is : A. ethene B. acetic acid c. ethyne D. ethanol |
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| 60 | Write the IUPAC name of the compound in the picture. |
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| 61 | Question 22. Give reason for the higher point of ethanol in comparison to methoxymethane. Presence of intermolecular H bonding in ethanol, but not in ether. |
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| 62 | Q. 39 Suggest a route to prepare ethyl hydrogensulphate (CH3 -CH2-050,-OH) starting from ethanol (CH3OH). |
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| 63 | Which of the following statements are correct? i) Ordinary ethyl alcohol is known as grain alcohol. ii) Methylated spirit contains rectified spirit iii) Absolute alcohol is ( 100 % ) ethanol iv) Rectified spirit is ( 100 % ) ethanol. A . ii, iii, iv B. ii, ii i D. All are correct |
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| 64 | ( ;(b)-(v) ) (d) ( – ) (iii) ( ;(e)- ) (i) ( A cdot(a)-(i i) ) ; (c) – (iv) ( (n) ) ( (mathrm{i}) ) (b) ( -(v) ;(c)-(text { iii) } ;(d)-(i v) ;(e)-(i) ) (b) ( -(i v) ;(c)-(v) ;(d)-(i i i) ;(e)-(i i) ) : -1 i) (iii) ( (b)-(v) ) ( (c)- ) in (d) ( :(e)-(i) ) ( D cdot(a) ) – (ii) : |
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| 65 | Question 13. Show how will you synthesise : (i) l-phenylethanol form a suitable alkene. (ü) Cyclohexylmethanol using an alkyl halide by an SN2 reaction. (iii) pentan-1-ol using a suitable alkyl halide? (1) Acidic hydration of ethenyl benzene. (ii) Alkaline hydrolysis of cyclohexyl methyl bromide. (iii) Alkaline hydrolysis of 1-bromopentane. |
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| 66 | Assertion: ( C a C l_{2} ) can’t be used for drying ethyl alcohol Reason: Calcium chloride can form an addition compound with ethyl alcohol A. Both Assertion and Reason are true and Reason is the correct explanation to Assertion B. Both Assertion and Reason are true and Reason is not the correct explanation to Assertion c. Assertion is true but Reason is false D. Assertion is false but Reason is true |
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| 67 | ( boldsymbol{C H}_{3} boldsymbol{O H} stackrel{boldsymbol{P}+boldsymbol{I}_{2}}{longrightarrow} boldsymbol{A} frac{M boldsymbol{g} / text {dryether}}{boldsymbol{}} ) ( boldsymbol{B} stackrel{boldsymbol{H C H O}}{longrightarrow} boldsymbol{C} stackrel{boldsymbol{H}^{+} / boldsymbol{H}_{2} boldsymbol{O}}{longrightarrow} boldsymbol{D} ) What are ( B & D ) respectively? A. ( C H_{3} M g I, C H_{3} C H O ) B. ( C H_{3} M g I, C H_{3} C H_{2} O H ) c. ( C H_{3} M g I, C H_{3} C O O H ) D. ( C H_{3} M g I, C H_{3} C O C H_{3} ) |
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| 68 | Arrange the following compounds in increasing order of boiling points. Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol A. Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol B. Propan-1-ol, butan-1-ol,butan-2-ol, pentan-1-o c. Pentan-1-ol, butan-2-ol, butan-1-ol, propan-1-ol D. Pentan-1-ol, butan-1-01, butan-2-ol, propan-1-o |
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| 69 | Diethyl ether reacts with ( P C l_{5} ) to form: This question has multiple correct options A. ethyl chloride B. phosphorous oxy trichloride c. 1,2 -dichloroethane D. ethene |
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| 70 | When 2 -ethylanthraquinol dissolved in a mixture of benzene and cyclohexanol is oxidized, the product is: A. Ethanol B. Hydrogen peroxide c. Anthracene D. None of these |
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| 71 | topp Q rpesour |
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| 72 | The compound which gives the most stable carbonium ion on dehydration is: ( A ) B. c. ( C H_{3} C H_{2} C H_{2} C H_{2} O H ) D. |
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| 73 | What is the common name of methyl alcohol? A. wine B. Wood spirit c. Dilute acid D. None of the above |
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| 74 | Given are cyclohexanol ( (I), ) acetic acid ( (I I) 2,4,6- ) trinitrophenol ( (I I I) ) and phenol ( (I V) . ) In these the order of decreasing acidic character will be: A ( , I I I>I I>I V>I ) ( I ) В. ( I I>I I I>I>I V ) c. ( I I>I I I>I V>I ) D. ( I I I>I V>I I>I ) |
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| 75 | Draw products formed in each of the following reaction and indicate stereochemistry. ( (a) ) ( (b) ) ( frac{(mathrm{i}) mathrm{HC} equiv mathrm{C}^{-}}{(mathrm{ii}) mathrm{H}_{2} mathrm{O}} ) ( (c) ) ( (d) ) ( frac{(mathrm{i}) mathrm{HC} equiv mathrm{C}^{-}}{(mathrm{ii}) mathrm{H}_{2} mathrm{O}} ) |
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| 76 | A vicinal diol has two alcoholic groups present: A. on the same carbon B. on adjacent carbon atoms c. anywhere along the carbon chain D. none of the above |
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| 77 | Assertion The reaction of alcohols with ( S O C l_{2} ) is catalysed by the presence of a tertiary ( operatorname{amine}left(boldsymbol{R}_{3} boldsymbol{N}right) ) Reason Tertiary amine promote the reaction by reacting with the by-product ( boldsymbol{H} boldsymbol{C l} ) 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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| 78 | The order of reactivity of alcohols towards hydrogen halide is : A ( cdot ) benzyl( >3^{0}>2^{0}>1^{0} ) В. ( 3^{0}> ) benzyl ( >2^{0}>1^{0} ) c. ( 3^{0}>2^{0}>1^{0}> ) benzyl D. ( 3^{0}>2^{0}> ) benz ( y l>1^{0} ) |
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| 79 | Assertion Ethane is a gas while ethyl alcohol is a İiquid. Reason Ethyl alcohol has greater molecular mass than ethane. 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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| 80 | Hydrogen chloride and ( S O_{2} ) are the side products in the reaction of ethanol with thionyl chloride. Which of the following is main product in this reaction? A. ( C_{2} H_{5}-O-C_{2} H_{5} ) в. ( C_{2} H_{6} ) c. ( C H_{3} C l ) D. ( C_{2} H_{5} C l ) |
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| 81 | ( boldsymbol{C H}_{2} boldsymbol{O H C H O H C H}_{2} boldsymbol{O H} ) is glycerol. It doesn’t contain alcoholic group. A . ( 1^{circ} ) B . ( 2^{text {? }} ) ( c cdot 3^{0} ) D. both ( 1^{0} & 2^{0} ) |
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| 82 | Write the process of making ethyl acetate by esterification with equation. | 12 |
| 83 | Controlled oxidation of methanol gives? A. methanoic acid B. methanal c. carbon dioxide and water D. methane |
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| 84 | Assertion Formation of petroleum occurs from hydrocarbon by the process called pyrolysis. Reason Hydrocarbon pyrolysis involves exothermic reactions. 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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| 85 | Alcohols containing only up to carbon atoms are completely miscible with water A. three B. four c. five D. two |
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| 86 | Which of the following is not a good method to prepare tert-butyl methyl ether? A ( cdotleft(C H_{3}right)_{3} C O^{-} N a^{+}+C H_{3} B r rightarrow ) B. ( left(C H_{3}right)_{3} C B r+C H_{3} O^{-} N a rightarrow ) C. ( H_{2} C=Cleft(C H_{3}right)_{2}+C H_{3} O H stackrel{H^{+}}{longrightarrow} ) D. All of these |
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| 87 | Q Type your question Why ( mathbf{A} ) ( B ) ( mathbf{C} ) ( D ) |
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| 88 | ( frac{8-i}{8} ) | 12 |
| 89 | Correct order of boiling points among following is: ( boldsymbol{C H}_{3}left(boldsymbol{C H}_{2}right)_{3} boldsymbol{C H}_{3}, quad boldsymbol{C}_{2} boldsymbol{H}_{5} boldsymbol{O C}_{2} boldsymbol{H}_{5} ) ( (boldsymbol{X}) ) ( (Y) ) ( A cdot x>Y>z ) B. ( Y>X>Z ) ( c cdot z>x>r ) D. ( z>Y>x ) |
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| 90 | Give the IUPAC name of the following compound | 12 |
| 91 | Among the three isomers of the nitrophenol, the one that is least soluble in water is: A. m-nitrophenol B. o-nitrophenol c. p-nitrophenol D. none of these |
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| 92 | Which of the following statements is not correctly showing the trend of the properties mentioned? A. ( C H_{3} C H_{2} O H>C H_{3} C H_{2} C H_{2} O H> ) ( C H_{3} C H_{2} C H_{2} C H_{2} O H ) B . ( C H_{3} C H_{2} O H>C H_{3} C H_{2} C H_{2} O H> ) ( C H_{3} C H_{2} C H_{2} C H_{2} O H ) (Boilingpoint) c. ( C H_{3} C H_{2} C H_{2} O H>C H_{3} C H-C H_{2} O H> ) ( C H_{3} ) ( C H_{3} ) ( C H_{3}-C_{I}^{prime}-O H ) Boiling point D. ( quad C H_{3} ) [ C H_{3}-C_{C H_{3}}^{L}-O H<C H_{3} C H-C H_{2} O H ] ( C H_{3} C H_{2} C H_{C} H_{2} O H ) |
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| 93 | Describe the laboratory method for preparation of diethyl ether and write the reaction with ( H_{2} O ) and cold ( H I ) |
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| 94 | Maximum boiling point would be shown by: A. ( C H_{3}-O-C H_{3} ) в. ( C_{2} H_{5}-O-C_{2} H_{5} ) c. ( C H_{3}-C H_{2}-C H_{2}-O H ) D. ( left(C H_{3}right)_{2} C H-O H ) |
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| 95 | Q Type your question_ Scheme -1 Scheme -2 ( mathbf{A} ) ( B ) ( C ) D. |
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| 96 | How can the following compounds be obtained from phenol? (i) ( 2,4,6- ) Tribromophenol ( (i i) 2,4,6 ) Trinitropheno (iii) Benzene (iv) Ortho and para-cresol. |
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| 97 | ( _{mathrm{H}_{3} mathrm{C}}^{mathrm{O}} ) 山 ( _{mathrm{CH}_{3}} frac{_{mathrm{l}, mathrm{NaBH}_{4}}}{2 . mathrm{D}_{3} mathrm{o}^{+}}>mathrm{X} ) ( mathbf{X}=mathbf{Y}=quad underset{mathbf{H}_{3} mathbf{C}}{mathbf{C}} stackrel{mathbf{D}}{mathbf{C}}_{mathbf{C H}_{3}}^{text {oD }} ) ( mathbf{X}=mathbf{Y}=underbrace{mathbf{H}}_{mathbf{H}_{3} mathbf{C}}^{mathbf{O} mathbf{H}}_{mathbf{C H}_{3}} ) |
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| 98 | Ethers have lower boiling points than their corresponding isomeric alcohols because of? A. hydrogen bonding in alcohols that is absent in ethers due to low polarity B. hydrogen bonding in ethers due to high polarity c. insolubility of ethers in water due to less polarity D. inertness of ethers as compared to alcohols. |
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| 99 | The relative order of esterification of alcohols is :- A. ( 1<22>3 ) c. ( 1>3>2 ) D. ( 1<3<2 ) |
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| 100 | Which one is the general formula of monohydric alcohols? A. ( C_{n} H_{2 n} O H ) в. ( C_{n+1} H_{2 n} O H ) c. ( C_{2 n} H_{2 n+2} ) OH D. ( C_{n} H_{2 n+1} O H ) |
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| 101 | ( x ) | 12 |
| 102 | In an aqueous solution at ( 25^{circ} mathrm{C} ) has twice as many ( O H^{-} ) as pure water its ( p O H ) will be: ( mathbf{A} cdot 6.699 ) B. 7.307 ( c cdot 7 ) D. 6.98 |
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| 103 | How is phenol (carbolic acid) prepared from Rasching’s process? | 12 |
| 104 | Unlike phenol, 2,4-dinitrophenol is soluble in sodium carbonate solution in water because? A. presence of two – ( N O_{2} ) groups in the ring makes 2,4 dinitrophenol a stronger acid than phenol. B. presence of two – ( N O_{2} ) groups in the ring makes 2,4 dinitrophenol a weaker acid than phenol. C. presence of two ( -N O_{2} ) groups make the hydrogen bonding easier, making 2, 4-dinitrophenol soluble D. nitro group reacts with ( N a_{2} C O_{3} ) while ( -O H ) group does not |
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| 105 | Name the reaction | 12 |
| 106 | Question 14. In Kolbe’s reaction, instead of phenol, phenoxide ion is treated with carbon dioxide. Why? SolutionDhe |
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| 107 | A student prepared methanol in the laboratory by the addition of ( 266 g ) of ( C O ) and ( 60 g ) of ( H_{2}, ) as shown below. ( boldsymbol{C O}(boldsymbol{g})+boldsymbol{H}_{2}(boldsymbol{g}) rightarrow boldsymbol{C} boldsymbol{H}_{3} boldsymbol{O} boldsymbol{H}(boldsymbol{l}) ) (a) Find out the limiting reagent (b) Calculate the amount of methanol produced and the amount of excess reactant remaining after the completion of the reaction. |
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| 108 | Increasing order of acidic strength among p=methoxy phenyl (I), p-methyl phenol (II) and p-nitrophenol (III) is: A . III, ।, ॥ B. ॥, ।, ॥। c. ॥॥, ॥।, D. I, II, III |
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| 109 | Give the equations of the following reaction(s): Oxidation of Propan-1-ol with alkaline ( K M n O_{4} ) solution |
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| 110 | Assertion Rate of reaction of alkyl halide in Williamson’s synthesis reaction is ( mathbf{1}^{circ} boldsymbol{R} boldsymbol{X}>mathbf{2}^{circ} boldsymbol{R} boldsymbol{X}>mathbf{3}^{circ} boldsymbol{R} boldsymbol{X} ) Reason It is a type of bimolecular substitution reaction ( left(boldsymbol{S}_{N} mathbf{2}right) ) 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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| 111 | Give chemical equations of the following conversions: (i) Diethyl ether from Ethanol (ii) Ethanol from Diethyl ether (iii) Ethyl acetate from Ethanol (iv) Ethanol from Glucose |
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| 112 | Which amoung the following has maximum boiling point? A ( . C H_{3}-C H_{2}-left(C H_{2}right)-C H_{2} O H ) B. ( C H_{3}-C H_{2}-C H_{2}-C_{}^{C H}-C H_{3} ) ( mathbf{c} . C H_{3}-C H_{3}-C H-C H_{2}-C H_{3} ) ( _{O H} ) D. [ begin{array}{l}C H_{3}-C_{3} \ _{O H}^{-} C-C H_{2}-C H_{3}end{array} ] OH |
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| 113 | How is 1-propoxypropane synthesised from propan-1-ol? Write mechanism of this reaction. |
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| 114 | ( frac{ }{2} ) 8 ( frac{d}{d} ) ( d ) |
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| 115 | Which one is the general formula of monohydric alcohols? A. ( C_{n} H_{2 n-2} O H ) в. ( C_{n+1} H_{2 n} O H ) c. ( C_{2 n} H_{2 n+2} 2 O H ) D. ( C_{n} H_{2 n} O H ) |
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| 116 | ( = ) | 12 |
| 117 | Which is less acidic than phenol? This question has multiple correct options A. 2,4,6-Trimethyl phenol в. ( C H_{3} ) ОН c. p-Nitropheno D. ( H_{2} O ) |
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| 118 | Which of the following is most soluble in water? A. n-butyl alcohol B. Iso-butyl alcohol c. Tertiary butyl alcohol D. None of the above |
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| 119 | In the synthesis of n-alkyl tert-alkyl ether by Williamson’s method the reactants used are: B. ( 1^{circ} R X ) and ( 3^{circ} )RONa ( mathrm{c} cdot 3^{circ} R X ) and ( 3^{circ} R O N a ) D. ( 1^{circ} R X ) and ( 1^{circ} R O N a ) |
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| 120 | Which alcohol is prepared from water gas? A. ( C_{2} H_{5} O H ) в. ( C H_{3} C H_{2} C H_{2} O H ) ( mathbf{c} cdot C H_{3} O H ) D. ( C_{6} H_{5} C H_{2} O H ) |
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| 121 | Which of the following is phenol? A. Cresol B. Catechol c. Resorcinol D. All of these |
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| 122 | Find the product of: ( boldsymbol{C H}_{3} boldsymbol{C H}_{2}-boldsymbol{O}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{O}- ) ( boldsymbol{C H}_{2}-boldsymbol{C}_{boldsymbol{6}} boldsymbol{H}_{boldsymbol{5}}+underset{(boldsymbol{e} boldsymbol{x} boldsymbol{c} boldsymbol{e} boldsymbol{s} boldsymbol{s})} rightarrow ? ) ( mathbf{A} cdot O H-C H_{2} C H_{2} O H, C_{6} H_{5} C H_{2}-I, C H_{3} C H_{2}-I ) B ( cdot C_{6} H_{5} C H_{2}-O H, C H_{3} C H_{2}-I, I-C H_{2} C H_{2}-O H ) ( mathbf{c} cdot I-C H_{2} C H_{2}-I, C_{6} H_{5} C H_{2}-I, C H_{3} C H_{2}-O H ) D. ( H O-C H_{2} C H_{2}-O H, C_{6} H_{5} C H_{2}-I, C H_{3} C H_{2}- ) ( O H ) |
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| 123 | Identify correct acidic strength order in the following compounds: A . i > ii > ii B. ii> sii’s |
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| 124 | Aliphatic ethers are purified by shaking with a solution of ferrous salt to remove which are formed on prolonged standing in contact with water A. aromatic ethers B. aliphatic alcohols c. peroxides D. aldehydes |
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| 125 | Ethanol is converted into ethoxy ethane: A. by heating excess of ethanol with conc. ( H_{2} S O_{4} ) at ( 140^{circ} ) ( c ) B. by heating Ethanol with excess of conc. ( H_{2} S O_{4} ) at 413 ( k ) C. by treating with conc. ( H_{2} S O_{4} ) at room temperature D. by treating with conc. ( H_{2} S O_{4} ) at ( 273 mathrm{K} ) |
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| 126 | The process involved in the formation of product in the following reaction is called as: A. hydrolysis B. dehydration c. decomposition D. none |
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| 127 | Which of the following alcohols is the least soluble in water? A. Ethanol B. 1-Propanol c. 1-Butanol D. 1-Pentanol |
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| 128 | Which of the following product are correct? uestion has multiple corrrect option |
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| 129 | In the given reaction, ( [boldsymbol{X}] ) and ( [boldsymbol{Y}] ) are: 4 and в. and ( c ) ( D ) |
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| 130 | Explain the preparation of phenol from cumene. |
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| 131 | Ethyl alcohol is manufactured by the fermentation of : A. molasses B. starch c. both A and B D. none of the above |
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| 132 | (a) Write IUPAC names of the following compounds: (i) ( boldsymbol{C H}_{2}=boldsymbol{C H}-boldsymbol{C H}_{2}-boldsymbol{O H} ) (ii) ( boldsymbol{C H}_{2}-boldsymbol{C H}-boldsymbol{C H}_{2} ) ( begin{array}{ccc}1 & 1 & 1 \ o_{H} & o_{H} & o_{H}end{array} ) (b) Write equations of the following chemical reactions: (i) Phenol reacts with ( B r_{2} ) in presence of ( boldsymbol{C S}_{mathbf{2}} ) (ii) Ethanol is heated at ( 573 mathrm{K} ) in presence of Cu. |
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| 133 | Phenol on sulphonation at ( 100^{circ} mathrm{C} ) gives: A. o-phenol sulphonic acid B. p-phenol sulphonic acid c. m-phenol sulphonic acid D. o- and p-phenol sulphonic acid |
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| 134 | Lower alcohols are more soluble in water than higher alcohols. A. True B. False |
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| 135 | Write the IUPAC name of the given compound ( boldsymbol{H}-begin{array}{ccccc}boldsymbol{H} & boldsymbol{H} & boldsymbol{H} & boldsymbol{H} & boldsymbol{H} \ boldsymbol{C} & – & boldsymbol{C} & -boldsymbol{C} & – & boldsymbol{C} & -boldsymbol{C} \ boldsymbol{H} & boldsymbol{O} boldsymbol{H} & boldsymbol{H} & boldsymbol{C H}_{3} & boldsymbol{H}end{array}-boldsymbol{H} ) |
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| 136 | ( frac{x}{8} ) | 12 |
| 137 | Illustrate with examples the limitations of Williamson’s synthesis for the preparation of certain types of ethers. |
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| 138 | The correct acidic order of the following is I. Phenol II. 4-methylphenol III. 4-nitrophenol B. ॥I>1>11 c. ॥>॥ᅵ>। |
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| 139 | The preparation of sodium benzenesulphonate during the preparation of benzene sulphonic acid involves: A. dehydration B. hydrolysis c. hydration D. sulfonation |
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| 140 | The products (A) and (B) are: his question has multiple correct options ( A ) в. ( c ) Dal |
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| 141 | The IUPAC name of sec. butyl alcohol is: A. 1-butanol B. 2-butanol c. 2-methyl-1-butanol D. 2-methyl-2-butanol |
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| 142 | In which one of the following reagents ( boldsymbol{O}-boldsymbol{H} ) bond fission in alcohol can not take place? A . Na a в. ( C H_{3} ) СООН c. ( C H_{3} M g B r ) D. ( P C l_{5} ) |
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| 143 | Question 18. Write the mechanism of the reaction of Hl with methoxy benzene. |
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| 144 | Which of the following reaction is feasible for the preparation of 1 -propoxy 2 methyl propane? This question has multiple correct options A. Williamson’s synthesis of ( left(M e_{2} C H C H_{2} O N a+M e C H_{2} C H_{2} C lright) ) B. Williamson’s synthesis of ( left(M e_{2} C H C H_{2} C l+M e C H_{2} C H_{2} O N aright) ) C. Alkoxymercuration-demercuration of ( left(M e_{2} C=C H_{2}+M e C H_{2} C H_{2} O Hright) ) D. Alkoxy mercuration demercuration of propene with ( M e_{2} C H C H_{2} O H ) |
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| 145 | The IUPAC name of the following compound is dodec( -10-e n-4- ) ( boldsymbol{y} boldsymbol{n}-boldsymbol{3}, boldsymbol{8}-boldsymbol{d} boldsymbol{i} boldsymbol{o l} ) A . True B. False |
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| 146 | Which of the following is tertiary alcohol? A. Ethyl alcohol B. Isopropyl alcohol c. Neopentyl alcohol D. 2-methyl 2-propanol |
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| 147 | Phenol reacts with ( P C l_{5} ), the main product is: ( A ) [ mathrm{Ph}-mathrm{O}-underbrace{mathrm{O}}_{mathrm{Cl}}^{mathrm{l}}-mathrm{Cl} ] B. [ mathrm{Ph}-mathrm{O}-underset{mathrm{C}}{mathrm{P}}^{mathrm{O}}-mathrm{O}-mathrm{Ph} ] ( c ) [ mathrm{Ph}–mathrm{O}-begin{array}{c} mathrm{O} \ mathrm{P} \ mathrm{OPh} end{array}-mathrm{O}-mathrm{Ph}_{mathrm{h}} ] D. none of thes |
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| 148 | Which is the major product obtained by hydrolysis of compound formed by reaction between formaldehyde and ethyl magnesium bromide? A. Ethanol в. Propan ( -2- ) ol c. Propan ( -1- ) ol D. ( 2- ) Methyl ( – ) propan ( -2- ) ol |
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| 149 | ( boldsymbol{C H}_{3} boldsymbol{C H O} stackrel{text {dil.NaOH}}{longrightarrow} boldsymbol{A} stackrel{boldsymbol{Delta}, text {dehydration}}{longrightarrow} ) ( boldsymbol{B} stackrel{boldsymbol{N i} / boldsymbol{H}_{2}}{longrightarrow} boldsymbol{C} stackrel{boldsymbol{N i} / boldsymbol{H}_{2}}{longrightarrow} boldsymbol{D} ) In the above sequence of reactions, compound D is: ( mathbf{A} cdot C H_{3} C H_{2} C H_{2} C H_{2} O H ) в. ( C H_{3} C H_{2} C H_{2} C H O ) c. O ( C H_{3} C H_{2} C H_{2} C H-C H_{3} ) |
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| 150 | ( mathbf{3} C_{2} boldsymbol{H}_{5} boldsymbol{O} boldsymbol{H}+boldsymbol{P} boldsymbol{C l}_{3} rightarrow mathbf{3} boldsymbol{C}_{2} boldsymbol{H}_{5} boldsymbol{C l}+boldsymbol{X} ) Where ( X ) is an oxyacid of phosphorus. ( boldsymbol{X} ) is: A ( . H_{3} P O_{4} ) в. ( H_{3} P O_{3} ) c. ( H_{3} P O_{2} ) D. ( H P O ) |
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| 151 | Which reducing agent is used for the following conversion? ( boldsymbol{R} boldsymbol{C O O H} rightarrow boldsymbol{R} boldsymbol{C H}_{2} boldsymbol{O H} ) A ( . ) Li ( A l H_{4} ) в. ( N a B H_{4} ) ( mathbf{c} cdot K_{2} C r_{2} O_{7} ) D. ( K M n O_{4} ) |
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| 152 | The given alcohol is (primary/ secondary) alcohol. (If your answer is primary type 1 else 2) [ mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{OH} ] |
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| 153 | Consider the following reaction. The product (A) is: ( A ) в. ( c ) ( D ) |
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| 154 | The given IUPAC name is 1,1 dimethylcyclohexane-3-ol Is the above statement correct? |
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| 155 | Which of the following alcohols is used as a beverage? A. Propanol B. 2-butanol c. Methanol D. Ethanol |
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| 156 | A compound containing two ( -O H ) groups attached to one carbon atom is unstable but which one of the following is stable? ( A ) в. ( c ) D. Al |
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| 157 | lowing compounds (i) and (ii) will not react with a Q. 50 Which of the following compounds (i) and (11) W mixture of NaBr and H2SO4. Explain why? OH () CH,CH,CH,OH the bond and hence |
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| 158 | Question 4. Name the factors responsible for the solubility of alcohols in water. |
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| 159 | Question 16. Explain why p-nitrophenol is more acidic than phenolp Solartion |
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| 160 | Treatment of conc. ( boldsymbol{H} boldsymbol{I} ) with ethyl ether will give the product: ( mathbf{A} cdot C_{2} H_{5} O H ) в. ( C_{2} H_{5} I ) c. Both the above D. None of the above |
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| 161 | The products ( (A) ) and ( (B) ) are : ( A ) ( B ) C. both A and B D. none of the above |
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| 162 | Assertion Ethers are regarded as a hydride of alcohols. Reason Ethers may be obtained by elimination of water molecule from two alcohol molecules. A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion. B. If both Assertion and Reason are correct. but Reason is not the correct explanation of Assertion C. If Assertion is correct but Reason is incorrect D. If Assertion is incorrect but Reason is correct. |
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| 163 | Phenol is less acidic than: A. ( o ) -nitrophenol B. ( p ) -methoxy phenol c. 2 -methylpropano D. 2, 2-dimethyl pentanol |
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| 164 | The strongest acid among the following is: A. o-methoxyphenol B. m-methoxyphenol c. p-methoxyphenol D. phenol |
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| 165 | Williamson’s synthesis is used to prepare: A. diethyl ether B. PVC c. bakelite D. ethyl alcohol |
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| 166 | Which of the following statement regarding solubility of ethers in water is true? A. Ethers are sparingly soluble in water due to the formation of hydrogen bond with water. B. Ethers are highly soluble in water due to the formation of hydrogen bond with water. C. Ethers are sparingly soluble in water as they cannot form hydrogen bond with water. D. Ethers are highly soluble in water as they are polar in nature. |
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| 167 | How will you convert: (i) Propene to propan-1-ol? (ii) Ethanal to propan-2-ol? |
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| 168 | What will be products formed when above epoxide reacts with ( boldsymbol{C H}_{3} boldsymbol{O H} ) in acidic and in basic medium? A . Acidic – ( left(C H_{3}right)_{2} C O H-C H_{2}left(O C H_{3}right) ); Basic ( left(C H_{3}right)_{2} Cleft(O C H_{3}right)-C H_{2} O H ) B. Acidic – (CH3)_COH – CH ( _{2}left(O C H_{3} ) ); Basic – right. ( left(C H_{3}right)_{2} C O H-C H_{2}left(O C H_{3}right) ) c. Acidic – ( left(C H_{3}right)_{2} Cleft(O C H_{3}right)-C H_{2} O H ; ) Basic ( left(C H_{3}right)_{2} C O H-C H_{2}left(O C H_{3}right) ) D. Acidic- ( left(C H_{3}right)_{2} Cleft(O C H_{3}right)-C H_{2} O H ; ) Basic( left(C H_{3}right)_{2} Cleft(O C H_{3}right)-C H_{2} O H ) |
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| 169 | Phenol reacts with alkali to give: A . salt B. water c. both ( A ) and ( B ) D. complex compound |
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| 170 | Which of the following can be obtained by subjecting ethyl alcohol to oxidation?
This question has multiple correct options |
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| 171 | Predict the increasing order of acidity in the following compounds. A. Phenol B. Paracresol c. Metanitrophenol D. Paranitrophenol |
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| 172 | Which of the following is steam volatile? A. O-nitrophenol B. P-nitrophenol c. Both of them D. Neither of them |
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| 173 | Which of the following reacts with phenol to give salicylaldehyde after hydrolysis? A. Dichloro methane B. Trichloro methane c. Methyl chloride D. None of the above |
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| 174 | Mixture can be of ( mathbf{A} ) ( B ) c. Both (a) and (b) D. None of these |
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| 175 | In the esterification of an organic acid R-COOH by alcohol R’OH, O of acid is isotopic. ( boldsymbol{R}-stackrel{mathbb{N}}{boldsymbol{C}}-stackrel{mathbf{1 8}}{boldsymbol{O} boldsymbol{H}}+boldsymbol{R}^{prime}-boldsymbol{O}-boldsymbol{H} rightarrow boldsymbol{R}- ) ( stackrel{0}{C}-O R^{prime}+H_{2} O ) Which of the following statement is correct? A. 18 p is in ester B. 18 O is in water ( c cdot 18 O ) is in both ( D cdot 18 O ) is in none |
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| 176 | Write the mechanism of the given reaction. |
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| 177 | An equlimolar quantities of ethanol and propanol are heated with conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) The products formed is/ are : A. ( C_{2} H_{5} O C_{2} H_{5} ) в. ( C_{3} H_{7} O C_{3} H_{7} ) c. ( C_{2} H_{5} O C_{3} H_{7} ) D. all of these |
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| 178 | 13. Chlorination of toluene in the presence of light and heat followed by the treatment with aqueous NaOH gives (a) o-Cresol (b) p-Cresol (c) 2,4-Dihydroxy toluene (d) Benzoic acid |
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| 179 | ( 3 mathrm{mL}, ) of ethanol is taken in a test tube and warmed gently in a water bath. A ( 5 % ) solution of alkaline potassium permanganate is added first drop by drop to this solution, then in excess. Write chemical equation of this reaction. |
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| 180 | is prepared on a large scale from water gas. A. Methanol B. Ethanol c. Methane D. Ethane |
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| 181 | An ether is more volatile than an alcohol having the same molecular formula. This is due to: A. dipolar character of ethers B. alcohols having resonance structures c. inter-molecular hydrogen bonding in ethers D. inter-molecular hydrogen bonding in alcohols |
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| 182 | During the preparation of phenol from benzene sulfonic acid, which of the following reagents is be used? A . ( N a O H ) в. ( operatorname{NaHSO}_{4} ) c. ( N a_{2} S O_{4} ) D. ( N a C l ) |
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| 183 | Above transformation can be carried out by : A ( cdot H^{+} / Delta, quad Z n(H g), H C l ) в. ( H I O_{4}, ) LiAlH( _{4} ) c. ( H I O_{4}, H^{+} / Delta ) D. ( H^{+} / Delta, H I O_{4} ) |
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| 184 | Write the IUPAC name of ( boldsymbol{O} boldsymbol{H} ) ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-quad boldsymbol{C} quad-boldsymbol{C H}_{2}-boldsymbol{C H}_{3} ) ( mid ) ( boldsymbol{C H}_{3} ) A. 3-Methylpentan-3-ol B. 3-Hydroxyhexane c. 3-Hydroxy-3-methyl pentane D. All of the above |
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| 185 | Illustrate with examples the limitations of Williamson’s synthesis for the preparation of certain types of ethers. |
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| 186 | Which of the following gases released during the preparation of phenol from benzene diazonium chloride: A. ( N_{2}, C l_{2} ) в. ( N_{2}, H C l ) c. ( N O_{2}, C l_{2} ) D. ( N_{2} O, C l_{2} ) |
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| 187 | Which of the following gives, on ozonolysis, both aldehydes and ketones? A. ( M e_{2} C=C H M e ) В. ( M e_{2} C=C M e_{2} ) ( mathbf{c} cdot operatorname{meCH}_{2}-C(M e)=C M e_{2} ) D. ( operatorname{Me} C H(M e)-C H=C H M e ) |
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| 188 | Which of the following is an antifreeze? A. water B. ether c. ethyl alcohol D. aniline |
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| 189 | In Williamson’s synthesis, ethoxy ethane is prepared by: A. heating sodium ethoxide with ethyl bromide B. passing ethanol over heated alumina C . treating ethyl alcohol with excess of conc. ( H_{2} S O_{4} ) at ( 430-440 K ) D. heating ethanol with dry ( A g_{2} O ) |
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| 190 | Benzene is converted to benzene sulfonate using sulphuric acid and eventually through the benzene sulfonate is gradually transformed to phenol A. neutralization B. fusion c. acidification D. All of the above |
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| 191 | An ether is more volatile than alcohol having the same molecular formula. This is due to: A. intermolecular hydrogen bonding in ethers B. dipolar character of ethers c. alcohols having resonance structures D. intermolecular hydrogen bonding in alcohols |
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| 192 | 133. CH, -CH, -0- CH = CH, HẠOIH580, , The product/s formed in the reaction is/are (a) CH2 – CH2 -0 – CH2 – CH2 – OH OH (b) CH-CH2-0-CH-CH, (c) CH2 – CH, – OH and HO – CH = CH, O (d) CH2CH2-OH and CH3-C-H 11 |
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| 193 | Assertion Ethanol boils at lower temperature than ethane. Reason The molecular weight of ethanol is higher than that of ethane. 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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| 194 | Here, A in the above sequence is : A. ethanol B. ethyl chloride c. ethane D. acetic acid |
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| 195 | Ethanol on reaction with acetic anhydride gives: A . acetic ester B. formic ester c. ethanoic acid D. ethyl acetate and ethanoic acid |
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| 196 | The strongest acid among the following aromatic compound is: A. o-Nitrophenol B. p-Chlorophenol c. p-Nitrophenol D. m-Nitrophenol |
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| 197 | The most acidic compound among the following is A. phenol B. ethanol c. 3,5 -dinitrophenol D. 4,4 -methoxyphenol |
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| 198 | Which of the following pairs of carbonyl compounds and Grignard reagent should be chosen as reactants to prepare 2,4 -dimethyl-3-pentanol? A. ( C H_{3} C H_{2} C H_{2} C H O ) and ( C H_{3} C H_{2} C H_{2} M g B r ) в. ( left(C H_{3}right)_{2} C H C H O ) and ( left(C H_{3}right)_{2} C H M g B r ) c. ( C H_{3} C H_{2} C O C H_{3} ) and ( left(C H_{3}right)_{2} C H M g B r ) D. ( left(C H_{3}right)_{2} C H C H O ) and ( C H_{3} C H_{2} C H_{2} M g B r ) |
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| 199 | Allanite wanted to prepare (R) 2- Methoxy butane using Williamson ether synthesis. He remembered that Williamson synthesis involves a ( boldsymbol{S}_{N} mathbf{2} ) displacement, which takes place with inversion of configuration. He ordered a bottle of (S) 2-Butanol for his chiral starting material. He also remembered that the ( S_{N} 2 ) goes best on primary halides so he made methyl halide and sodium (S) 2 -butoxide after warming these reagents together he obtained an excellent yield of 2 -Methoxy butane. 2-Methoxy butane ( frac{text {anhydrous} boldsymbol{H} boldsymbol{I}}{rightarrow} ) products Products formed are: ( mathbf{A} cdot H_{3} C-I+C H_{3}-(O H) C H-C H_{2}-C H_{3} ) B. ( C H_{3}-I+C H_{3}-C H_{2}-C H_{2}-C H_{3} ) ( mathbf{c} cdot C H_{3}-O H+C H_{3}-C H(I)-C H_{2}-C H_{3} ) D. ( C H_{3}-C H_{2}-I+C H_{3}-(O H) C H-C H_{3} ) |
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| 200 | The boiling point of alcohol is higher than ether due to: A. hydrogen bonding B. large size of alcohol c. presence of -OH group D. high moleculer weight |
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| 201 | Alcoholic beverages contain: A. Glycerol B. Ethyl alcohol c. Methyl alcohol D. Isopropyl alcohol |
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| 202 | How many sigma bonds are in a molecule of diethyl ether, ( left(C_{2} H_{5}right)_{2} O ? ) ( A cdot 14 ) B. 12 ( c cdot 8 ) D. 16 |
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| 203 | IUPAC name of the tertiary butyl alcohol is: A. 1-butanol B. 2-butanol c. 2-methyl-1-propanol D. 2-methyl-2-propanol |
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| 204 | There are two samples ( A ) and ( B . A ) is Methanol and ( B ) is Ethanol. Both are heated both at the same rate in closed container separately. Which one is correct about the above test? A ( cdot ) At ( 60^{circ} mathrm{C} ), container ( A ) and ( B ) both have liquids in them B. At ( 80^{circ} ) C, container ( A ) and ( B ) both have vapours in them C. At ( 70^{0} mathrm{C} ), container ( B ) has liquid and ( A ) has vapours D. All the above |
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| 205 | 2-Phenylethanol may be prepared by the reaction of phenylmagnesium bromide with: A. ( H C H O ) в. ( C H_{3} C H O ) c. ( C H_{3} ) СОСН ( _{3} ) D. |
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| 206 | CH, 127. B2D6 Н,0,9OH CH: АН D (b) ( CH) ОН CH3 ОН D АН Н (c) (OH (d) (CH, Lloh |
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| 207 | Diethyl ether ( C_{4} H_{10} O ), used medically as an anesthetic, is prepared from ethyl alcohol ( C_{2} H_{5} O H ) in presence of an acid. ( 2 C_{2} H_{5} O H frac{a c i d}{140^{0}} C_{2} H_{5} O C_{2} H_{5}+H_{2} O ) Calculate the ( % ) yield if ( 46 g ) of ethyl alcohol gives ( 30 g ) of ether. |
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| 208 | Write chemical reaction for the following conversion. Cumene to phenol |
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| 209 | Which of the following alcohols cannot be oxidized by ( K_{2} C r O_{7} ? ) A. Ethanol B. Tert butyl alcohol c. Isopropyl alcohol D. Allyl alcohol |
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| 210 | Tertiary butyl methyl ether on treatment with HI forms: A. isobutane and methyl iodide B. isobutanol and methanol C . tertiary butyl iodide and methanol D. tertiary butyl iodide and methyl iodide |
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| 211 | What is the product formed? A. ( quad O C H_{2} C H_{3} ) B. ( c ) D. none of the above |
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| 212 | The compound Y is: ( A ) B. ( quad C H_{3} ) ( C H_{2}-C H=C-C H_{2}-C O O H ) ( O H ) ( c ) ( mathbf{D} cdot C H_{2}=C H-C H-C H_{2}-C O O H ) |
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| 213 | ( I_{2} ) produced, when ozone reacts with moist ( K I ), is used to convert ( C_{2} H_{5} O H ) to ( C I_{3} C H O . ) The number of moles of ozone required to convert 1 mol of ( C_{2} H_{5} O H ) into ( C I_{3} C H O ) is : A . 1 B . 2 ( c cdot 4 ) D. 3 |
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| 214 | The common name for propan-2-ol is : A . n-Propyl alcohol. B. iso-Propyl alcohol. c. ethyl alcohol. D. methyl alcohol. |
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| 215 | IUPAC name is 1-phenyl propan-3-ol Is the above statement correct? A. True B. False |
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| 216 | ( boldsymbol{C H}_{3} boldsymbol{M} boldsymbol{g} boldsymbol{X}^{C boldsymbol{H}_{3}} stackrel{C O O C_{2} boldsymbol{H}_{5}}{boldsymbol{A}} stackrel{N a}{rightarrow} boldsymbol{B}^{C_{2}} frac{boldsymbol{H}_{5} boldsymbol{O H}}{longrightarrow} ) ( C ) Here, ( C ) is : A ( cdot C_{2} H_{5} O C_{2} H_{5} ) в. ( C H_{3} ) СООС( _{2} ) Нь c. ( C H_{3} C O O C H_{3} ) D. ( left(C H_{3}right)_{3} C O C_{2} H_{5} ) |
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| 217 | The IUPAC name for methyl acetate is : A. ethoxymethane B. Methyl ethanoate c. ethylmethanoate D. methoxy ethane |
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| 218 | What are the products obtained from the reaction given below? MeOEt ( stackrel{H I}{longrightarrow} ? ) A . ( M e I ) and ( E t O H ) B. ( M e O H ) and ( E t I ) c. ( M e I, M e O H, E t I ) and ( E t O H ) D. None of the above |
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| 219 | ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{O}-boldsymbol{C H}_{2}-boldsymbol{C H}_{3} ) react with hot and excess HI the product formed is: A. ( C H_{3} C H_{2} I ) and ( C H_{3} C H_{2} O H ) в. ( C H_{3} C H_{2} ) ОН c. ( C H_{3} C H_{2} I ) D. None of these |
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| 220 | Phenol is a: A . crystalline solid B. amorphous solid C . volatile liquid D. nonvolatile liquid |
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| 221 | Explain the following reactions of chloroform: (i) Effect of air and sunlight, (ii) Reimer Tiemann reaction. |
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| 222 | Ethanol is denatured (made unfit for human consumption) by adding a poisonous substance. Identify it A. Tartaric acid B. Methyl alcohol c. Acetic acid D. Stearic acid |
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| 223 | Use of the Data Booklet is relevant to this question. ( 2.40 g ) of ( p r o p a n-2-o l ) were mixed with excess acidified potassium dichromate(VI). The reaction mixture was then boiled under reflux for twenty minutes. The organic product was then collected by distillation. The yield of product was ( 75.0 % ) What mass of product was collected? A ( .1 .74 g ) B. ( 1.80 g ) c. ( 2.22 g ) D. ( 2.32 g ) |
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| 224 | Correct statement(s) in case of n- butanol and t-butanol is (are): This question has multiple correct options A. both are having equal solubility in water B. t-butanol is more soluble in water than n-butanol. C. boiling point of t-butanol is lower than n-butanol. D. boiling point of n-butanol is lower than t-butanol. |
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| 225 | A compound (X) of molecular formula ( C_{3} H_{8} O ) can be oxidized to a compound of molecular ( C_{3} H_{6} O_{2}(Y) .(X) ) is most likely to be A. aldehyde B. alcohol c. ether D. both B and C |
12 |
| 226 | Explain the industrial production of phenol of high purity and less production cost and also explain the bromination of phenol. | 12 |
| 227 | Give equations for chemical reactions to carry out following conversions. (a) Cumene to phenol (b) Phenol from aniline |
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| 228 | mole of phenol reacts with bromine to give 2,4,6 -tribromophenol. The amount of bromine required is: A. 3.0 moles B. 1.5 moles c. 4.5 moles D. 6.0 moles |
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| 229 | Which of the following is true? A. Diethyl ether has lower density than dibutyl ether. B. Diethyl ether has higher density than dibutyl ether. C. Diethyl ether is as dense as dibutyl ether. D. The relative density of diethyl ether and dibutyl ether depends on the method of their preparation. |
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| 230 | Question 21. Name the reagents used in the following reactions (i) Oxidation of a primary alcohol to carboxylic acid. (ii) Oxidation of a primary alcohol to aldehyde. (ii) Bromination of phenol to 2,4,6-tribromophenol. (iv) Benzyl alcohol to benzoic acid. (v) Dehydration of propan-2-ol to propene. (vi) Butan-2-one to butan-2-ol. 0 Oxidising agent (strong) (1) Weak oxidising agent (iii) Bry/H20 (iv) Strong oxidising agent (v) Dehydrating agent (vi) Reducing agent. |
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| 231 | The sodium phenoxide ion formed during the preparation of phenol from benzene suphonic hydrolysed in prasence of acid to: A. neutralize the basic phenoxide ion. B. to increase the basic nature of reaction mixture c. to acidify the reaction mixture so as to get phenol. D. both ( A ) and ( C ). |
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| 232 | Write the IUPAC name of the given compound. |
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| 233 | toppr 5 Q Type your question- 1. ( boldsymbol{C} boldsymbol{l}_{2}, boldsymbol{F} boldsymbol{e} boldsymbol{l}_{3} ) III. ( boldsymbol{H} boldsymbol{B} boldsymbol{r}, ) Heat ( A ) B. ( c ) ( D ) |
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| 234 | An Alcohol X pass over Cu at ( 300 mathrm{C} ), then produced compound decolourised Bromine liquid, X is: ( A ) B. ( c ) ( D ) |
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| 235 | By the reduction of carbonyl compounds the alcohol not obtained is: A. primary alcohol B. secondary alcohol c. tertiary alcohol D. all the above |
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| 236 | STATEMENT-1: Diethyl ether when boiled with water gives ethyl alcohol. STATEMENT-2: Diethyl ether is less dense than water. A. STATEMENT-1 is True, STATEMENT-2 is True: STATEMENT-2 is a correct explanation for STATEMENT- 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 |
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| 237 | In the below shown reaction sequence, the compound B formed is : ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{O H} stackrel{boldsymbol{P C l}_{3}}{longrightarrow} boldsymbol{A} stackrel{text {alc. } boldsymbol{K O H}}{boldsymbol{N}} boldsymbol{B} ) A. propane B. propanol c. propene D. propyne |
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| 238 | Among the compound ( 1-1 V ), the compound having the lowest boiling point is ( A ) B. II c. III D. IV |
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| 239 | The IUPAC name of the following compound is: A. 1,2 -dimethyl-2-butenol B. 3-methylpent-3-en-2-ol C. 3,4 -dimethyl-2-buten-4-ol D. none of the above |
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| 240 | What happens when the sodium metal is dropped in the ethanol? |
12 |
| 241 | Explain how Alcohols of lower molecular mass are soluble in water. | 12 |
| 242 | Write two methods of preparation of methyl alcohol. Describe giving diagram. Give such a test of methyl alcohol which is not given by ethyl alcohol which is not given by ethyl alcohol. Give the chemical reactions. |
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| 243 | The name of the compound is isobuty alcohol. If true enter 1 , else enter 0 . |
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| 244 | In the given reaction, products are ( A ) and ( mathrm{H}_{2} ) B. and ( mathrm{CH}_{3} mathrm{Br} ) ( c ) and ( mathrm{CH}_{3} mathrm{OH} ) ( D ) and ( mathrm{CH}_{3} mathrm{Br} ) |
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| 245 | toppr Q Type your question ( A ) ( mathrm{OH} quad mathrm{OCH}_{3} ) ( X=Y=C H_{3}-C H-Cleft(C H_{3}right)_{2} ) B. ( mathrm{OCH}_{3} mathrm{OH} ) ( X=Y=C H_{3}-C H-Cleft(C H_{3}right)_{2} ) ( c ) ( mathrm{OH} quad mathrm{OCH}_{3} ) ( mathrm{I} ) ( mathrm{X}=mathrm{CH}_{3}-mathrm{CH}-mathrm{C}left(mathrm{CH}_{3}right)_{2} ) ( mathrm{OCH}_{3} mathrm{OH} ) ( Y=C H_{3}-C H-Cleft(C H_{3}right)_{2} ) ( D ) ( mathrm{OCH}_{3} ) ( mathrm{X}=mathrm{CH}_{3}-mathrm{CH}-mathrm{C}left(mathrm{CH}_{3}right)_{2} ) ( mid ) ( mathrm{OH} ) ( mathrm{OH} ) ( mathrm{Y}=mathrm{CH}_{3}-mathrm{CH}-mathrm{C}left(mathrm{CH}_{3}right)_{2} ) ( mathrm{OCH}_{3} ) |
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| 246 | Write balanced chemical equations for each of the following: (i) The action of warm water on AIN. (ii) The action of hot and concentrated nitric acid on copper. (iii) The action of hydrochloric acid on sodium bicarbonate. (iv) The action of dilute sulphuric acid on sodium sulphite. (v) Preparation of ethanol from ethyl chloride. |
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| 247 | Which is stronger acid in the following pair? 3-Chlorophenol and 2-Ethylphenol. |
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| 248 | How are the following conversions carried out? (i) Propene ( longrightarrow ) Propan-2-ol (ii) Benzyl chloride ( longrightarrow ) Benzyl alcohol (iii) Ethyl magnesium chloride ( longrightarrow ) Propan-1-ol (iv) Methyl magnesium bromide ( longrightarrow 2 ) Methylpropan-2-ol |
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| 249 | Which compound in each of the following pairs would have the higher boiling point ? Explain your answers. ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{O H} boldsymbol{o r} boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{O C H}_{3} ) ( boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{O} boldsymbol{H} ) or ( boldsymbol{H} boldsymbol{O C H}_{2} boldsymbol{C H}_{2} boldsymbol{O} boldsymbol{H} ) (c) (d) ( (e) ) ( (mathrm{g}) ) (h) Hexane ( mathrm{CH}_{3}left(mathrm{CH}_{2}right)_{4} mathrm{CH}_{3} ) or nonane ( mathrm{CH}_{3}left(mathrm{CH}_{2}right)_{7} mathrm{CH}_{3} ) ( (mathbf{i}) ) |
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| 250 | Mark the correct order of decreasing acid strength of the following compounds ( A cdot(v)>(i v)>(i i)>(i)>( ) iii) B. (ii)> (iv) > (i) > (iii) > (v) ( c cdot(i v)>(v)>(text { iii) }>(text { ii })>( text { i) } ) D. (v) > (iv) > (iii) > (ii) > (i) |
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| 251 | 38. Rectified spirit is : (1) 95% ethyl alcohol (2) 100% ethyl alcohol (3) methylated spirit (4) tincture iodine |
12 |
| 252 | When ( C H_{3} M g I ) is made to react with acetone and the addition product is hydrolysed, we get a/an: A. primary alcohol B. secondary alcohol c. tertiary alcohol D. aldehyde |
12 |
| 253 | Which of the following bond line structural formulae is correct for the four carbon branched primary alcohols? ( A ) B. ( c ) ( D ) |
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| 254 | DE ( boldsymbol{C H}_{3}-boldsymbol{C H}-boldsymbol{C H}_{2}-boldsymbol{C H}_{3} frac{A l_{2} boldsymbol{O}_{3}}{573 boldsymbol{K}} ) ( boldsymbol{C H}_{3}-boldsymbol{C H}=boldsymbol{C H}-boldsymbol{C H}_{3} ) Butane-2-ol 2-ene |
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| 255 | Which of the following is mostly easily cleaved by ( boldsymbol{H} boldsymbol{B r} ) ? ( A ) ( B ) ( c ) D. |
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| 256 | When phenol is treated with ( C H C l_{3} ) and ( N a O H, ) the product formed is: A. Benzaldehyde B. Salicylaldehyde c. Salicylic acid D. Benzoic acid |
12 |
| 257 | Give reason for the higher boiling point of ethanol in comparison to methoxymethane. |
12 |
| 258 | The IUPAC name of ( boldsymbol{H}_{3} boldsymbol{C}-underset{boldsymbol{O} boldsymbol{C}_{3} boldsymbol{H}_{7}}{boldsymbol{H}}- ) ( boldsymbol{C}_{3} boldsymbol{H}_{7} ) is: |
12 |
| 259 | Which of the following alcohols forms a ketone when oxidized? A. 1-Propanol B. Methanol c. 2-Methyl-2-propanol D. 2-Propanol |
12 |
| 260 | Q Type your question. the following species are involved in the above-mentioned reaction as intermediates? This question has multiple correct options ( A ) B. ( c ) ( D ) |
12 |
| 261 | Which is/are the correct IUPAC name(s) of the corresponding structures? This question has multiple correct options A. 3-(N-Ethylamino)-2-methylcyclohexan-1-ol B. 3- (2-Aminoethyl)-2-methylcyclohexan-1-ol c. Methyl 4-chlorocarbonyl-3-cyanobutanoate D. Cyclohexanal |
12 |
| 262 | Identify the products. | 12 |
| 263 | Which of the following substituents will decrease the acidic strength of phenol? A. ( -N O_{2} ) B. ( -C N ) ( mathrm{c} cdot-C H_{3} ) D. – ( C H O ) |
12 |
| 264 | The IUPAC name for the compound: A. 3,4 -Dimethyl-2-butene- -4-ol B. 1, 2-Dimethyl-2-butenol c. 3-Methyl pent-3-en-2-ol D. 2, 3-Dimethyl-3-pentenol |
12 |
| 265 | IUPAC name of the given compound is : A. 2,6 -Dimethylphenol B. 2-Hydroxy-3-Methyltoluene c. 2 -Hydroxy- 1,3 -Dimethylbenzene D. None of these |
12 |
| 266 | Substances used in two different projects done by the members of a science club are given in the table. Project – 1 Project – 2 |
12 |
| 267 | Dehydration of alcohols can be done by using: A . conc. ( H_{2} S O_{4} ) в. ( A l_{2} O_{3} ) c. ( C a O ) D. both A and B |
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| 268 | ( boldsymbol{n} ) -propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent? A ( cdot P C l_{5} ) B. Reduction c. Oxidation with potassium dichromate D. Ozonolysis |
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| 269 | Name the two organic compounds which have the same molecular formula ( C_{2} H_{6} O . ) Will they react with ( P C l_{5} ? ) If they react, what are the products formed? |
12 |
| 270 | Question 15. Explain why is ortho nitrophenol more acidic than ortho methoxyphenol while (1) NO, electron withdrawing group. OCHz-electron releasing group. (ii) Presence of electron withdrawing group increases the stability of phenoxide ion while presence of electron releasing group decreases its stability (ii) Higher is the stability of phenoxide ion formed, more is the acidic character |
12 |
| 271 | Which of the following statements is/are correct about the following reactions? This question has multiple correct options |
12 |
| 272 | In the following sequences of reactions, the compound ( Q ) formed will be? [ mathbb{P} stackrel{text { Oleum }}{longrightarrow} P frac{(mathrm{i}) mathrm{NaOH}}{(mathrm{ii}) mathrm{H}^{+}} rightarrow Q ] A . aniline B. phenol c. benzaldehyde D. benzene sulphonic acid |
12 |
| 273 | Which of the following compounds has highest boiling point? A. Propan-1-ol B. ( n ) – butane c. chloroethane D. Propanal |
12 |
| 274 | 108. CH CH = CH, -BD3/THFX. H2O2/0H Identify product X is: (a) CH2CHCH,D (b) CH3CHCH,OH OH (C) CH3CHCH; (d) CHD-CH-CH3 OD OH |
12 |
| 275 | Alcohols of low molecular weight are: A. soluble in water B. soluble in water on heating C . insoluble in water D. insoluble in all solvents. |
12 |
| 276 | Identify the products ( A ) and ( B ) | 12 |
| 277 | What will happen when diethyl ether treated with hot and conc. ( H ) I? A. Ethyl alcoho B. Ethyl iodide c. Methyl iodide D. Methanol |
12 |
| 278 | Give the decreasing order of reactivity of the following compounds with ( H B r ) ( (mathrm{I}) ) ( left.(mathrm{II}) mathrm{H}_{3} mathrm{C}-bigotimesrightrangle ) ( (mathrm{III}) mathrm{M}_{mathrm{e}} mathrm{O}-langlebigcircrangle widehat{mathrm{O}_{mathrm{H}}} ) ( (mathbf{I V}) ) |
12 |
| 279 | What is true for the equilibrium reaction: Acetic acid+ ethanol ( stackrel{boldsymbol{H}^{+}}{rightleftharpoons} ) Ethyl acetate ( + ) ( boldsymbol{H}_{2} boldsymbol{O} ? ) This question has multiple correct options A. The use of equimolar quantities of ethanol and acetic acid will give greatest yield of ester at equilibrium. B. Removal of water will increase the amount of ester at equilibrium C. Addition of water ester at equilibrium will cause formation of equal amount of water D. Application of pressure increases the amount of ester at equilibrium |
12 |
| 280 | Question 17. Arrange water, enthanol and phenol in increasing order of acidity and give reason for your answer. |
12 |
| 281 | How is ( n- ) propoxypropane synthesized from propan ( -1- ) ol? Write the mechanism of this reaction. |
12 |
| 282 | Which of the following compounds is obtained on passing ethanol vapours on heated ( boldsymbol{A l}_{2} boldsymbol{O}_{3} ) ? A. Ethylether B. Acetone c. Ethane D. Ethanol |
12 |
| 283 | The name of the compound is Cyclopent-1-en-3-ol If true enter 1 , else enter 0 . |
12 |
| 284 | Question 8. Alcohols react with active metals e.g., Na, K etc, to give corresponding alkoxides. Write down the decreasing order of reactivity of sodium metal towards primary, secondary and tertiary alcohols. |
12 |
| 285 | Write the structrual formula of the major product in the following case: Ethene mixed with air is passed under pressure over a silver catalyst at ( 250^{circ} mathrm{C} ) |
12 |
| 286 | Based on above isomers answer the following. Which isomer on dehydration with conc. ( boldsymbol{H}_{3} boldsymbol{P} boldsymbol{O}_{4} ) undergo maximum rearrangement? ( A ) B. ( c ) D. |
12 |
| 287 | Methanol can be prepared when: A. iodomethane is heated with moist silver oxide B. iodomethane react with sodium in the presence of ether C. both ( A ) and ( B ) D. none of these |
12 |
| 288 | Ethylene oxide when treated with Grignard reagent yields: A. secondary alcohol B. tertiary alcohol c. cyclopropyl alcohol D. primary alcohol |
12 |
| 289 | Which part of the -COOH group gets cleaved in the esterification with alcohol? A. only H atom B. only OH partttt c. either 1 or 2 D. c- oн bond |
12 |
| 290 | Explain the mechanism of the following reaction. ( mathbf{2} boldsymbol{C} boldsymbol{H}_{3}-boldsymbol{C} boldsymbol{H}_{2}-boldsymbol{O} boldsymbol{H} frac{boldsymbol{H}^{+}}{4 mathbf{1} mathbf{3} boldsymbol{K}} boldsymbol{C} boldsymbol{H}_{3}- ) ( boldsymbol{C H}_{2}-boldsymbol{O}-boldsymbol{C H}_{2}-boldsymbol{C H}_{3}+boldsymbol{H}_{2} boldsymbol{O} ) |
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| 291 | The major organic product in the reaction: ( boldsymbol{C H}_{3}-boldsymbol{O}-boldsymbol{C H}left(boldsymbol{C H}_{3}right)_{2}+boldsymbol{H I} rightarrow ) Product is: A ( cdot C H_{3} O H+left(C H_{3}right) C H I ) в. ( operatorname{ICH}_{2} mathrm{OCH}left(mathrm{CH}_{3}right)_{2} ) ( ^{mathrm{c}} cdot_{C H_{3}} O Cleft(C H_{3}right)_{2} ) D. ( left.C H 3_{3} I+left(C H_{3}right)_{2}right) C H O H ) |
12 |
| 292 | Write balanced equation for : Acetic acid is warmed with ethanol in the presence of conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) |
12 |
| 293 | Ethyl alcohol is the hydrolysis product of A ( cdot C_{2} H_{5} C l ) в. ( C H_{3} C H O ) ( mathbf{c} cdot C_{2} H_{4} ) D. ( C_{2} H_{5} M g I ) |
12 |
| 294 | ( boldsymbol{C}_{6} boldsymbol{H}_{5}-boldsymbol{O}-boldsymbol{C}_{7} boldsymbol{H}_{15}(boldsymbol{n}) ) IUPAC name of the compound is : A. 1-Phenoxyheptane B. 1-Heptoxybenzene c. Both (a) and (b) D. None of these |
12 |
| 295 | Decreasing order of acidic strength of different (-OH) group is: ( mathbf{A} cdot w>x>y>z ) в. ( w>z>x>y ) ( mathbf{c} . z>w>x>y ) D. ( z>x>w>y ) |
12 |
| 296 | Write the name of reactant used for the preparation ethyl t-butyl ether |
12 |
| 297 | Glycerol is: A. ( 1,3- ) dihydroxy propane B. ( 2,3- ) dihydroxy propanone c. ( 2,3- ) dihydroxy propane D. ( 1,2,3- ) Propane triol |
12 |
| 298 | The compound which reacts fastest with Lucas reagent at room temperature, is A . butan-1-ol B. butan-2-ol c. 2-methyl propan-1-ol D. 2-methyl propan-2-ol |
12 |
| 299 | ( x ) ( x ) ( x ) |
12 |
| 300 | Question 14. Give two reactions that show the acidic nature of phenol. Compare acidity of phenol with that of ethanol. Reaction of phenol with Na and NaOH comparing of acidity of phenol and ethanol. |
12 |
| 301 | Diazonium salt used in the preparation of phenol is obtained by treating with nitrous acid (obtained from sodium nitrite). A. Aromatic primary amine B. Aromatic secondary amine c. Nitro benzene D. None of the above |
12 |
| 302 | The compounds ( (C) ) and ( (D) ) respectively are: ( mathbf{A} cdot E t N H_{2} ) and ( operatorname{Pr} C H=O ) B. ( E t-N H- )Pr and ( H C O O H ) ( mathbf{C} cdot operatorname{Pr} N H_{2} ) and ( E t C H=O ) D. ( E t N H_{2} ) and ( operatorname{Pr} C H_{2} O H ) |
12 |
| 303 | ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}(boldsymbol{O H})- ) ( boldsymbol{C H}_{2} boldsymbol{C H}_{3} stackrel{[boldsymbol{O}]}{rightarrow} boldsymbol{A} frac{boldsymbol{C H}_{3} M boldsymbol{g}-boldsymbol{I}}{boldsymbol{H}_{2} boldsymbol{O} / boldsymbol{H}^{+}} boldsymbol{B} ) What is ( A ) in the given reaction sequence? A. ( C H_{3}-C H_{2}-C H_{2}-C O-C H_{3} ) B. ( C H_{3}-C H_{2}-C O-C H_{2}-C H_{3} ) c. ( C H_{3}-C H_{2}-O-C H_{2}-C H_{2} C H_{3} ) D. ( C H_{3}-C H_{2}-C H_{2}-C H_{2}-C H O ) |
12 |
| 304 | The other name for Syngas is: A. Producer gas B. Water gas c. Tear gas D. Fuel gas |
12 |
| 305 | The final product obtained in the reaction is: [ mathrm{H}_{3}-langlebigcircrangle-mathrm{O} mathrm{CH}_{3}+mathrm{HBr} longrightarrow ] ( A ) в. ( c ) [ mathrm{cH}_{3}(bigcirc)-mathrm{O} sqrt{bigcirc}-mathrm{cH}_{3} ] D. none of these |
12 |
| 306 | What is the product in the following reaction? A. Benzoquionone B. Cyclohexane-1-one c. Benzoic sulphate D. Benzoic acid |
12 |
| 307 | Oxidation of ( 1^{0} ) alcohols to aldehydes is very successful for the alcohols like: A. Pent-2-yn-1-이 B. 1-hexanol c. n-propyl alcohol D. 1-pentanol E . 1-octanol |
12 |
| 308 | Phenol ( frac{1 . C H C l_{3} / N a O H}{2 . H^{+}} ) Salicyl aldehyde The above reaction is known as: A. Gattermann reaction B. Sandmeyer reaction c. Perkin reaction D. Reimer-Tiemann reaction |
12 |
| 309 | Based on above isomers answer the following. Which isomers on dehydration with conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) give alkene which is capable to show geometrical isomerism? ( A cdot g, h, f ) B. b, d, a ( c cdot a, b, c ) ( D ) of these |
12 |
| 310 | Give the equations of reactions for the preparation of phenol from cumene. |
12 |
| 311 | Which of the following compound is most acidic? A ( . C H_{4} ) B. ( C_{2} H_{6} ) c. ( C H equiv C H ) D. ( C_{2} H_{5} O H ) |
12 |
| 312 | When phenol is treated with ( C H C l_{3} ) and ( N a O H, ) the product formed is : A. Benzaldehyde B. Salicylaldehyde c. Salicyclic acid D. Benzoic acid |
12 |
| 313 | Name the following (1) Thte non-sublimable solid from a mxiture of iodine and potassion nitrate (2) The heavier liquid component from mercury and water (3) The lower boiling point component from methyl alcohol and water. (4) The compound containing one atom of sulphur and two atoms of oxygen (5) An acid whose formula is ( boldsymbol{H}_{mathbf{2}} boldsymbol{C} boldsymbol{O}_{3} ) |
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| 314 | Q Type your question- ( (A) ) 4 ( B ) ( c ) ( D ) ( & ) |
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| 315 | Consider the above sequence of reactions. Find ( boldsymbol{A}, boldsymbol{B} ) and ( boldsymbol{C} ) ( overbrace{mathrm{CH}}_{2} mathrm{OH} stackrel{mathrm{HBr}}{longrightarrow} mathrm{A}^{mathrm{O}_{3} / text { reduction }}>mathrm{B}+mathrm{c} ) ( mathbf{A} ) ( overbrace{mathrm{CH}}_{2} mathrm{Br}, mathrm{CH}_{2}=mathrm{O}, mathrm{O}=mathrm{CH}-^{*} mathrm{CH}_{2} mathrm{Br} ) B. ( overbrace{x}_{mathrm{CH}_{2} mathrm{Br}}, stackrel{*}{mathrm{CH}_{2}=} 0, mathrm{O}=mathrm{CH}-mathrm{CH}_{2} mathrm{Br} ) ( c ) ( overbrace{x}_{mathrm{CH}_{2} mathrm{Br}}, ) HCOOH ( , mathrm{O}=mathrm{CH}-dot{mathrm{CH}}_{2} mathrm{Br} ) D. ( overbrace{x}_{mathrm{CH}_{2} mathrm{Br}}, ) HCOOH ( , mathrm{HOOC}-stackrel{*}{mathrm{CH}_{2}} mathrm{Br} ) |
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| 316 | iso-butylene when subjected to hydroboration oxidation reaction, yields: A. iso-butyl alcohol B. sec-butyl alcohol c. n-butyl alcohol D. tert-butyl alcohol |
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| 317 | Name the reagent used for Bromination of phenol to 2,4,6 -tribromophenol: ( mathbf{A} cdot H B r ) B. ( N B S ) c. ( B r_{2} / H_{2} O_{2} ) D. ( B r_{2} / H_{2} O ) |
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| 318 | begin{tabular}{l} 2 \ ( c ) \ ( c ) \ hline end{tabular} |
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| 319 | Write the three steps involved in the mechanism of acid catalysed dehydration of ethanol to ethene. |
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| 320 | Which one of the following compounds do not give a primary alcohol on reduction? A. Propanal B. Propanoic acid c. Methyl propanoate D. Propan-2-one |
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| 321 | Question 7. Give the structures and IUPAC names of monohydric phenols of molecular formula, C,H,O. Ortho (1, 2); para (1.4); meta (1.3) Draw these isomers according to the mentioned positions of -OH and -CH3 groups. |
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| 322 | An alcohol on oxidation gives ( C H_{3} C O O H ) and ( C H_{3} C H_{2} C O O H . ) The alcohol is : A ( cdot C H_{3} C H_{2} O H ) в. ( C H_{3} C H(O H) C H_{2} C H_{3} ) c. ( left(C H_{3}right)_{2} C(O H) C H_{2} C H_{3} ) D. ( C H_{3} C H(O H) C H_{2} C H_{2} C H_{3} ) |
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| 323 | Assertion Fruit formation process shows increase in rate with passage of time. Reason Hydrolysis of ester is a homogeneous autocatalytic reaction. A. Both Assertion and Reason are correct and the Reason is the correct explanation of the Assertion B. Both Assertion and Reason are correct but the Reason is not the correct explanation of the Assertion C. The Assertion is correct but the Reason is incorrect D. Both Assertion and Reason are incorrect |
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| 324 | Among the four compounds (i) acetone, (ii) propanol, (iiii) methyl acetate and (iv) propionic acid, the two that are isomeric are A. methyl acetate and acetone B. methyl acetate and propanol c. propionic acid and methyl acetate D. propionic acid and acetone |
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| 325 | Which series of compounds can be prepared by oxidation of primary alcohols? | 12 |
| 326 | 32. A compound A (CH,0) upon treatment with CH,MgX gives 4 moles of methane. Identify the structure of (A) which has all primary functional groups: ОН ОН ОН ОН (b) 7 CHO ОН ОН 0 НО ОН (d) ХАОН ОН — ОН ОН |
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| 327 | The product is: ( A ) B. ( c ) D. |
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| 328 | The ease of esterification of following alcohols with HCOOH will be highest for ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{O H} quadleft(boldsymbol{C H}_{3}right)_{2} boldsymbol{C H O H} ) ( left(begin{array}{c}left.boldsymbol{C H}_{3}right)_{3} boldsymbol{C O H} \ mathbf{3}end{array}right. ) |
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| 329 | Which of the following leads to formation of ( 1^{0} ) alcohol? A ( cdot C H_{3}-C H=C H_{2} frac{H_{2} O}{H^{+}} ) B. ( C H_{3}-C H=C H_{2} frac{N a B H_{4} / O H^{circ}}{H gleft(O A c_{2} / T H Fright.} ) c. ( C H_{3}-C H=C H_{2} frac{H_{2} Q_{2} / O H^{6}}{B_{2} H_{6} / T H F} ) D. ( C H_{3}-C equiv C-C H_{3} ) dil.Haso ( _{text {di.HgS }} ), |
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| 330 | Mixed ether will not be formed in the reaction? A ( cdot C H_{3} O C H_{2} C l+C_{2} H_{5} M g B r ) в. ( C H_{2} N_{2}+C_{2} H_{5} O H ) c. ( C_{2} H_{5} O N a+C H_{3} ) D. ( C_{2} H_{5} O H+H_{2} S O_{4}left(140^{0} Cright) ) |
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| 331 | ( (A) ) and ( (B) ) are: ( A ) [ mathbf{A} text { and } mathbf{B} Rightarrow mathbf{N} equiv mathbf{C} prod_{mathbf{O}} ] в. [ mathbf{A} text { and } mathrm{B} Rightarrow mathbf{N} equiv mathrm{C} overbrace{mathrm{M}_{mathrm{e}}}^{mathrm{OH}} mathbf{M}_{mathrm{e}} ] ( c ) [ begin{array}{c} mathbf{A} Rightarrow mathbf{N} equiv mathbf{C} widehat{|} mathbf{N} \ mathbf{O} \ mathbf{B} Rightarrow mathbf{M} mathbf{e} end{array} ] D. [ mathbf{A} Rightarrow mathbf{N} equiv mathbf{C} widehat{mathbf{O}} ] [ mathrm{B} Rightarrow mathrm{Me} overbrace{mathrm{o}}^{mathrm{OH}} overbrace{mathrm{Me}}^{mathrm{M}} ] |
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| 332 | Ethyl alcohol on distillation with ( boldsymbol{X} ) gives chloroform, ( boldsymbol{X} ) is: A. a paste of bleaching powder B. chlorine c. methyl chloride D. ( C a(O H)_{2} ) |
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| 333 | Primary alcohols are obtained by the reaction of Grignard reagent with: A. ( C H_{3} C O C H_{3} ) в. ( H C O O H ) с. НСН О D. ( C H_{3} C H O ) |
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| 334 | What is picric acid? How is it prepared from phenol? | 12 |
| 335 | On the treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is: A. ( O_{2}-C_{3} ) В ( cdot O_{5}-C_{6} ) c. ( C_{4}-O_{5} ) ( mathrm{D} cdot C_{1}-O_{2} ) |
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| 336 | Draw the structural formula of ( 2- ) methylpropan-2-ol molecule. |
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| 337 | Fermentation invariably leads to the formation of : A. ethyl alcohol B. methyl alcohol c. carbon dioxide D. acetic acid |
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| 338 | Chloroethane, ( C_{2} H_{5} C l, ) does not react with methanol under mild conditions. What reagent could be added to the reaction mixture to increase the rate of substitution? A. ( H C l ) (conc.) в. ( N a O H ) c. ( N H_{4} O H ) D. ( A g N O_{3} ) |
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| 339 | Assertion: Alcohols on dehydration can produce ether as well as alkene under different conditions. Reason: Dehydration of alcohol proceeds through the formation of carbonium ion. A. Both Assertion and Reason are true and Reason is the correct explanation to Assertion B. Both Assertion and Reason are true and Reason is not the correct explanation to Assertion c. Assertion is true but Reason is false D. Assertion is false but Reason is true |
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| 340 | Name the reagents used in the following reactions: (i) Oxidation of a primary alcohol to carboxylic acid. (ii) Oxidation of a primary alcohol to aldehyde. (iii) Bromination of phenol to 2,4,6 tribromophenol. (iv) Benzyl alcohol to benzoic acid. (v) Dehydration of propan-2-ol to propene. (vi) Butan-2-one to butan-2-ol. |
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| 341 | How will you convert phenol to phenolpthalein? | 12 |
| 342 | Question 6. Suggest a reagent for the following conversion. OH |
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| 343 | Which of the following is an example of symmetrical ether? A. Diisopropyl ether B. Methoxy ethane c. 1-Methoxy-2-methyl propane D. None of these |
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| 344 | ( A 3^{circ} ) alcohol as shown can be obtained by the reaction of ketone (diisopropyl ketone) and A. isopropyl magnesium bromide B. isopropyl lithium c. diisopropyl cadmium D. diisopropyl zinc |
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| 345 | During the preparation of phenol from benzene sulfonic acid for the preparation of sodium benzo sulfonate from benzene sulfonic acid which of the following reaction takes place: A. hydration B. dehydration c. chlorination D. nitratration |
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| 346 | The coal tar fraction which contains phenol is: ( A . ) middle oil B. green oil c. heavy oil D. light oil |
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| 347 | How is phenol manufactured by Cumene process? |
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| 348 | When 4 -pentene-1-ol is treated with aqueous bromide, a cyclic bromosubstituted ether is formed rather than expected bromohydrine. Select the explanation that best account for the result. A. The ether is the result of a hydride shift in the initially formed carbocation B. The ether is formed in the intramolecular nucleophilic attack on the initially formed bromonium ion C. The reaction is initiated by the deprotonation of the ( O H ) group D. The initially formed bromonium ion undergoes an alkene shift to form new ( C-O ) bond |
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| 349 | Write any two methods of preparation of phenol. Give their corresponding equations. | 12 |
| 350 | Propan – 2 – ol on reacting with ( C l_{2} ) produces? A. Trichloroethanol B. Trichloroacetone c. Acetone D. None |
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| 351 | Write the IUPAC Name of the following structure [ begin{array}{rl} mathbf{C H}_{3}-underset{mathbf{U}}{mathbf{O}} mathbf{H}-mathbf{C} mathbf{H}-mathbf{C} mathbf{H}-mathbf{C} mathbf{H}_{3} \ mathbf{O} mathbf{H} & mathbf{O} mathbf{H} end{array} ] |
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| 352 | Question 16. Explain how does the -OH group attached to a carbon benzene ring activate it towards electrophilic substitution? Resonance effect due to-OH group. |
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| 353 | 189. When acetylene is passed into methanol at 160-200°C in the presence of a small amount of potassium methoxide and under pressure, the following is formed (a) Polyvinyl alcohol (b) Divinyl ether (c) Dimethyl ether (d) Methyl vinyl ether |
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| 354 | topp ( mathrm{ClCH}_{2} mathrm{CH}^{14} mathrm{C} mathrm{H}_{2} mathrm{OC}_{2} mathrm{H}_{5} ) 14 ( mathrm{ClCH}_{2} mathrm{CHCH}_{2} mathrm{ONa} ) ( mathrm{OC}_{2} mathrm{H}_{5} ) ( underbrace{14}_{mathrm{CH}_{2}-mathrm{CHCH}_{2} mathrm{OC}_{2} mathrm{H}_{5}} ) ( mathrm{C}_{mathrm{O}}^{mathrm{H}_{2}-} mathrm{CHCH}_{2} mathrm{OC}_{2} mathrm{H}_{5} ) |
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| 355 | Explain why ArOR ethers are cleaved to give RI and rather than Arl and ROH. | 12 |
| 356 | Which of the following alcohol has the highest boiling point? A. Butan ( -2-o l ) B. ( 2- ) Methylpropan ( -2- ) ol c. Propan ( -2- ) ol D. Butan ( -1-o l ) |
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| 357 | Alcohols can be identified by the reaction with sodium. A. True B. False |
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| 358 | Assertion: o-phenol sulphonic acid on heating at ( 100^{0} C ) changes to ( mathrm{p} ) phenol sulphonic acid. Reason: Sulphonation of phenol is a reversible process. A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion B. If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion C. If Assertion is correct but Reason is incorrect D. If Assertion is incorrect but Reason is correct |
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| 359 | Which of the following phenols has the largest ( p K_{a} ) value (i.e. is least acidic)? ( A ) B. ( c ) ( D ) |
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| 360 | Can we dry ethanol by anhydrous ( C a C l_{2} ) ? |
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| 361 | Reaction of sodium ethoxide and ethyl iodide will give: A. ether B. ethyl alcohol c. acetaldehyde D. acetic acid |
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| 362 | Rank the following compounds in order of decreasing acid strength (most acidic ( rightarrow ) least acidic) ( mathbf{A} cdot 2>4>1>3 ) B. ( 1>3>4>2 ) ( mathbf{c} cdot 3>1>2>4 ) D. ( 3>1>4>2 ) |
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| 363 | When ethyl alcohol reacts with ( B r_{2} ) in presence of red phosphorus, the compound formed is: A ( cdot C_{2} H_{6} ) в. ( P B r_{3} ) c. ( C H_{3} B r ) D. ( C_{2} H_{5} B r ) |
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| 364 | Which of the following will have a mesoisomer also? A . 2- chlorobutane B. 2,3 – dichlorobutane c. 2,3 – dichloropentane D. 2 – hydroxypropanoic acid |
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| 365 | The functional group present in the final product is : A. ( O H ) в. СООН ( c . C H O ) D. None of the above |
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| 366 | Which of the following is the most basic in character? A ( . H_{2} O ) в. ( C H_{3} C H_{2} O H ) ( mathbf{c} cdot C H_{3} O C H_{3} ) D. ( C H_{3} O H ) |
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| 367 | Select ( X ) and ( Y ) out of: ( M n O_{4}^{-} / O H^{-} ) I: ( boldsymbol{H} boldsymbol{C O}_{3} boldsymbol{H} ) B. X-II,Y- – c. ( x-1, y- ) |
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| 368 | When 3 -methylbutan-2-ol is treated with HBr, the following reaction takes place. What are the correct steps for formation of the above product? [ begin{array}{c} mathbf{C H}_{3}-underset{mathbf{C}}{mathbf{C}} mathbf{H}-mathbf{C H}-mathbf{C H}_{3} frac{mathbf{H B r}}{mathbf{I}} \ mathbf{U}_{3} mathbf{O H} \ mathbf{B H}_{3}-mathbf{C}-mathbf{C H}_{2}-mathbf{C H}_{3} \ mathbf{C H}_{3} end{array} ] A. Formation of carbocation ( rightarrow ) Nucleophilic attack by ( B r^{c} ) B. Formation of carbocation ( rightarrow 1,2 ) hydride shift Nucleophilic attack by ( B r^{circ} ) c. Formation of carbocation ( rightarrow 1,2 ) methyl shift Nucleophilic attack by ( B r^{ominus} ) D. None of these |
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| 369 | Phenol reacts with acetone in the presence of conc. Sulphuric acid to form ( a C_{15} H_{16} O_{2} ) product. The structural formula of the product is: ( A ) B. c. ( _{X} begin{array}{l}O-C_{6} H \ O C_{6} H_{5}end{array} ) ( D ) |
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| 370 | ( A 3^{o} ) alcohol as given can be obtained by the reaction of ( P h M g B r ) and: This question has multiple correct options A. ethyl carbonate B. benzophenone c. ethyl benzoate D. benzamide |
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| 371 | Consider the following reaction: ( boldsymbol{C}_{2} boldsymbol{H}_{5} boldsymbol{O} boldsymbol{H}+boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} rightarrow boldsymbol{P} boldsymbol{r} ) oduct Among the following, which one cannot be formed as a product under my conditions? A. Ethylene B. Ethyl hydrogen sulphate c. Acetylene D. Diethyl ether |
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| 372 | Which of the following will exhibit highest boiling point? A. ( C H_{3} C H_{2} O C H_{2} C H_{3} ) в. ( C H_{3} C H_{2} C H_{2} C H_{2} C H_{2} O H ) c. ( C H_{3} C H_{2} C H_{2} C Hleft(C H_{3}right) O H ) D. ( C H_{3} C H_{2} Cleft(C H_{3}right)_{2} O H ) |
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| 373 | What is the product formed? [ mathrm{CH}_{2}=mathrm{CH}-left(mathrm{CH}_{2}right)_{3}-mathrm{CH}_{2}-mathrm{OH} stackrel{mathrm{PCC}}{longrightarrow} ] |
12 |
| 374 | Sodium benzene sulphonate after reaction with ( N a O H ) undergoes acidic hydrolysis, the compound formed would be: A. phenol B. benzoic acid c. benzene D. disodium benzaldehyde |
12 |
| 375 | Show how would you synthesize the given alcohol from appropriate alkenes. | 12 |
| 376 | Identify the lettered compounds ( D ) to ( G ) in the following reaction schemes. |
12 |
| 377 | Which of the following compound will have highest boiling point? A. water B. Ethanol c. Methanol D. Dimethylethene |
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| 378 | What will react with ( C H_{3} M g B r ) followed by decomposition with ( boldsymbol{H}_{3} boldsymbol{O}^{oplus} ) to give ( 2^{circ} ) alcohol. A. ( C H_{2}=C H O H ) в. ( C H_{3} C H O ) ( c ) D. None of these |
12 |
| 379 | In which of the following solvents, KI has highest solubility? The dielectric constant ( (epsilon) ) of each liquid is given in parentheses. A ( cdot C_{6} H_{6}(epsilon=0) ) B. ( left(C H_{3}right)_{2} C O(epsilon=21) ) c. ( C H_{3} O H(epsilon=32) ) D. ( C C l_{4}(epsilon=0) ) |
12 |
| 380 | Which of the following statement is not correct? A. Phenol is neutralised by sodium carbonate B. Phenol is used to prepare analgesic drugs C. Solubility of phenol in water is more than that of chlorobenzene D. Boiling point of o-nitrophenol is lower than that of ( p ) nitrophenol |
12 |
| 381 | The compound which gets dissolved in water is : A. ( C_{2} H_{6} ) в. ( C_{2} H_{4} ) c. ( C_{2} H_{2} ) D. ( C_{2} H_{5} O H ) E ( cdot C_{3} H_{8} ) |
12 |
| 382 | In the reaction of phenol with ( boldsymbol{C} boldsymbol{H} boldsymbol{C l}_{3} ) and aqueous ( N a O H, ) the electrophile attacking the ring is: A. ( C H C l_{3} ) в. ( C H C l_{2} ) ( mathbf{c} cdot: C C l_{2} ) D. ( C O C l_{2} ) |
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| 383 | ( left(boldsymbol{C O}+boldsymbol{H}_{2}right)+boldsymbol{H}_{2}^{boldsymbol{6} 73 boldsymbol{k}, 300 a t boldsymbol{m}, / C r_{2}} overrightarrow{boldsymbol{O}_{3}-boldsymbol{Z} n boldsymbol{O}} ) The above shown reaction may by used for manufacture of: A. ( H C H O ) в. ( C H_{3} ) СООН с. НСООН D. ( C H_{3} O H ) |
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| 384 | Phenol on treatment with ( d i l . H N O_{3} ) gives two products ( P ) and ( Q . P ) is steam volatile but ( Q ) is not. ( P ) and ( Q ) are, respectively: ( A ) B. ( c ) D. |
12 |
| 385 | Match the compounds in Column I with their characteristics/tests/reactions ( (s) ) reagent(s)/stereochemistry/isomer(s) given in Column II. Matching can be one or more than one. Column I Column I Reaction ( quad ) Product and name of the reaction |
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| 386 | Ethyl alcohol and phenol both contain OH group. Why phenol is acidic and alcohol is neutral in nature? Give reason. |
12 |
| 387 | Explain why propanol has higher boiling point than that of the hydrocarbon, butane? | 12 |
| 388 | Butane has a ( _{–}-_{-}–_{-} ) boiling point to that of propanol. A. higher B. similar c. lower D. none of these |
12 |
| 389 | The correct order of increasing dissociation constant of the following compounds is: ( A cdot|<I V<I<| ) B. IV < III < I <I c. ( |V<|<mid<| ) D. IV <I<II<III |
12 |
| 390 | Which of the following is not a characteristic of alcohol? A. They are lighter than water. B. Their boiling points rise fairly uniformly with rising molecular weight C. Lower members are insoluble in water and organic solvents but the solubility regularly increases with molecular mass. D. Lower members have a pleasant smell and burning taste, higher members are colourless and tasteless. E. Higher members have a pleasant smell and burning taste, lower members are colourless and tasteless. |
12 |
| 391 | Structure of methyl propyl ether (methoxypropane) is: A ( cdot C H_{3}-C H_{2}-C H_{3} ) в. ( C H_{3}-underset{O}{|}-O H ) c. ( C H_{3}-O-C_{3} H_{7} ) D. ( C H_{3}-C-C H_{3} ) ॥ 监 ( o ) E ( cdot C H_{3}-C H_{2}-N H_{2} ) |
12 |
| 392 | toppr Q Type your question ( (mathbf{A}) ) COO This question has multiple correct options A. The products (B) and (D), respectively, are: and B. The products (B) and (D), respectively are: and c. Phenol cannot be chlorinated because the ring is susceptible to oxidation by ( C 1_{2} ) ation of (C) from (B) proceeds by Arsn addition-elimination |
12 |
| 393 | How can you synthesize Ethanol from Ethene? |
12 |
| 394 | Glycerol does not contain alcoholic group. A . ( 1^{circ} ) B . ( 2^{circ} ) ( c cdot 3^{0} ) D. ( 1^{0} ) and ( 2^{0} ) |
12 |
| 395 | Reagent R2 Reagent R 118. 11lllll НО ОН НО ОН R, and R, are (a) Cold alkaline KMnO4, OsOZ/H,O, (b) Cold alkaline KMnO4, HCO H and H,0+ (c) Cold alkaline KMnO, CH,CO,H (d) C,H,CO,H, HCO,H |
12 |
| 396 | Compound/s which give/s alcohol on reduction by ( L i A l H_{4} ) is/are: This question has multiple correct options ( A ) B. c. D. |
12 |
| 397 | When excess of ( C_{2} H_{5} O H ) at ( 140^{0} C ) reacts with concentrated ( H_{2} S O_{4}, ) the product obtained is: A. diethyl ether B. diethyl sulphate c. ethylene D. ethylene hydrogen sulphate |
12 |
| 398 | Explain Kolbe-Schmitt reaction and Fries-rearrangement reaction. | 12 |
| 399 | Hydroboration of isobutylene followed by oxidative alkaline hydrolysis gives: A. ( 1- ) Butanol B. ( 2- ) Butanol c. Isobutyl alcohol D. Tertiary butyl alcohol |
12 |
| 400 | Condensation of phenol with acetone gives: A. bisphenol-A B. catechol c. resorcinol D. hydroquinone |
12 |
| 401 | The IUPAC name of the above shown compound is: A. but-2-ene-2,3-diol B. Pent-2-ene-2,3-diol C. 2-methylbut-2-ene-2,3-diol D. hex-2-ene-2,3-diol |
12 |
| 402 | Write the equations involved in the following reaction. Williamson ether synthesis. |
12 |
| 403 | ( boldsymbol{C H}_{2}=boldsymbol{C H}-boldsymbol{C H}_{2}-boldsymbol{O H} frac{1 . boldsymbol{K H}}{2 . boldsymbol{P h C H}_{2} boldsymbol{B r}} ) ( boldsymbol{A} frac{1 . B_{2} H_{6}}{2 . H_{2} O_{2} / O H^{-}} boldsymbol{B} ) The end product (B) is: ( A ) в. ( c ) D. |
12 |
| 404 | The enzyme which converts glucose to ethyl alcohol is : A. zymase B. invertase c. maltase D. diastase |
12 |
| 405 | Epoxides are: A. unsaturated ethers B. mixed ethers C . cyclic ethers D. none of these |
12 |
| 406 | An equimolar quantities of ethanol and propanol is heated with conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) The product formed is /are? A. ( C_{2} H_{5} O C_{2} H_{5} ) в. ( C_{3} H_{7} O C_{3} H_{7} ) c. ( C_{2} H_{5} O C_{3} H_{7} ) D. all of these |
12 |
| 407 | Question 9. Give the equations of reactions for the preparation of phenol from cumene. Oxidation of cumene into cumene hydroperoxide, then acidic hydrolysis. |
12 |
| 408 | Teritary alcohol is obtained as major product in ( mathbf{A} cdotleft(C H_{3}right)_{2} C H-C H=C H_{2}^{text {oxymercution/demercution}} ) ( mathbf{B} cdotleft(C H_{3}right)_{3} C-C H=C H_{2} stackrel{d i l H_{2} S O_{4}}{longrightarrow} ) ( mathbf{C} cdotleft(C H_{3}right)_{2} C H-C H=C H_{2}^{H y d r o b o r a t i o n, O x i d a t i o n} ) D. All of the above |
12 |
| 409 | The IUPAC name of anisole is: A. ethoxybenzene B. methoxybenzene c. propoxybenzene D. butoxybenzene |
12 |
| 410 | 8 8 8 8 8 |
12 |
| 411 | A ( _{-1}-ldots_{text {diol has two hydroxyl }} ) groups on C atoms. This question has multiple correct options A. vicinal, adjacent B. geminal, adjacent c. vicinal, same D. geminal, same |
12 |
| 412 | How is ethanol prepared from the following compounds: 1. Ethene |
12 |
| 413 | dcter Question 12. Predict the products of the following reactions (1) CH3-CH2-CH2–0–CH3 + HBr → OC2H5 + HBr – Ques OCH Conc. H2SO4 Conc. HNO3 (iv) (CH3)3C-OCH, HI |
12 |
| 414 | An industrial method of preparation of methanol is: A. catalytic reduction of carbon monoxide in presence of ( Z n o-C r_{2} O_{3} ) B. by reacting methane with steam at ( 900^{circ} mathrm{C} ) with a nickel catalyst C. by reducing formaldehyde with lithium aluminium hydride D. by reacting formaldehyde with aqueous sodium hydroxide solution |
12 |
| 415 | An oxygen-containing organic compound was found to contain 52% carbon and ( 13 % ) of hydrogen. Its vapour density is ( 23 . ) The compound reacts with sodium metal to liberate hydrogen. A functional isomer of this compound is : A. ethanol B. ethanal c. methoxy methane D. methoxy ethane |
12 |
| 416 | Propanone on reaction with alkyl magnesium bromide followed by hydrolysis will produce? A. Primary alcohol B. Secondary alcohol c. Tertiary alcohol D. Carboxylic acid |
12 |
| 417 | Give reasons: p-nitro phenol is more acidic than ( p ) methyl phenol. |
12 |
| 418 | Question 2. Identify allylic alcohols in the above examples. Following groups are included in allylic alcohols. H CH2=CH-C-OH CH=CH-CH2-OH CH2=CH-C-OH Primary (10) allyl alcohol Secondary (29) allyl alcohol Tertiary (3) allyl alcohol |
12 |
| 419 | 8 8 8 8 |
12 |
| 420 | Which of the following is strongly acidic? A. Phenol B. O-cresol c. p-nitrophenol D. p-cresol |
12 |
| 421 | Benzene sulphonic acid is: ( A ). basic B. acidic c. neutral D. both A and B |
12 |
| 422 | aluenyue Question 18. Explain the following with an example. (i) Kolbe’s reaction. (ii) Reimer-Tiemann reaction. (iii) Williamson ether synthesis. (iv) Unsymmetrical ether. |
12 |
| 423 | Which of the following represents the correct IUPAC name for the compounds concerned? a) But-3-yn-1-ol b) But-4-ol-1-yne |
12 |
| 424 | Which compound is the most soluble in water? A. chloroethane B. Ethanol c. Ethanal D. Ethylene glycol |
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| 425 | Esterification of ( (-)- ) lactic acid with methanol yields ( (+)- ) methyl lactate. Assuming that there are no side reactions, what is true about this reaction? A ( cdot ) An ( S N_{2} ) reaction has occurred, inverting the absolute configuration of the chiral centre. B. ( A n S N_{1} ) reaction at the chiral centre has inverted the optical rotation. C. A diastereomer has been produced; diastereomers have different physical properties, including optical rotation D. optical rotation is not directly related to absolute configuration, so the change in sign of rotation is merely a coincidence. |
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| 426 | ( C H_{3} ) The reaction, ( C H_{3}-C H-C H_{2}- ) ( boldsymbol{O}-boldsymbol{C H}_{2} boldsymbol{C H}_{3}+boldsymbol{H} boldsymbol{I} stackrel{boldsymbol{Delta}}{longrightarrow} ? ) Which of the following compound will be formed? ( mathbf{A} cdot C H_{3}-C H-C H_{2}-I+C H_{3} C H_{2} O H ) ( left._{C H_{3}}^{prime}right|_{C} ) в. ( C H_{3}-C H-C H_{3}+C H_{3} C H_{2} O H ) I ( _{C H_{3}} ) c. ( C H_{3}-underset{C H_{3}}{C H}-C H_{2} O H+C H_{3} C H_{3} ) D. ( C H_{3}-C H-C H_{2} O H+C H_{3} C H_{2} I ) [ begin{array}{l}_{C H_{3}}end{array} ] |
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| 427 | Hydrogen bonding is absent in ether A. True B. False |
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| 428 | Write the formula of compound ( boldsymbol{A} ) formed. |
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| 429 | How is carbolic acid prepared from the following compound? (i) Aniline (ii) Chlorobenzene and steam at ( 698 mathrm{K} ) ? Draw structure of DDT. Write its environmental effects. Mention two physical properties of carbolic acid. |
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| 430 | Identify D: ( mathbf{A} cdot C H_{3} O H ) B ( cdot C_{2} H_{6} O ) ( mathbf{c} cdot C_{2} H_{5} O ) ( mathrm{D} cdot C_{4} H_{10} mathrm{O} ) |
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| 431 | Question 10. Write chemical reaction for the preparation of phenol chlorobenzene. Reaction of chlorobenzene with sodium hydroxide followed acidification of the product formed. de followed |
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| 432 | Which of the following products are not correctly matched in the given reactions? A ( cdot C_{2} H_{5} O C H_{3}+H B r frac{373 K}{longrightarrow} C_{2} H_{5} O H+C H_{3} B r ) B . ( C_{2} H_{5} O C_{2} H_{5}+2 H I rightarrow C_{2} H 5 I+C_{2} H_{5} O H ) C ( cdot C_{2} H_{5} O C_{2} H_{5}+H C C l stackrel{text {Exess}}{text {Cold}}left[left(C_{2} H_{5}right)_{2} O^{+} Hright] C l ) D. ( left(C H_{3}right)_{3} C O C_{2} H_{5} stackrel{H I}{longrightarrow}left(C H_{3}right)_{3} C I+C_{2} H_{5} O H ) |
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| 433 | ( boldsymbol{C H}_{3} boldsymbol{B r}+boldsymbol{M} boldsymbol{g} stackrel{text {Ether}}{longrightarrow} boldsymbol{A} stackrel{boldsymbol{H C H O}}{longrightarrow} ) ( boldsymbol{B} stackrel{boldsymbol{H O H}}{longrightarrow} boldsymbol{C} ) Compound ( boldsymbol{C} ) is: A. acetic acid B. acetaldehyde c. ethyl alcohol D. formic acid |
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| 434 | Methyl alcohol is treated with conc HI and red P. The main product obtained is ? A. ( C H_{3} O H ) в. ( C H_{4} ) c. ( C H_{2} I_{2} ) D. ( P H_{3} ) |
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| 435 | Reaction of which among the following ether with ( H I ) in cold leads to the formation of methyl alcohol? A. Ethyl methyl ether B. Methyl propyl ether c. Isopropyl methyl ether D. tert-butyl methyl ether |
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| 436 | Assertion Both Grinard reagent and dialkyl cadmium react with acid chlorides to form tert. alcohols. Reason Grignard reagents are as reactive as diakyl cadmium. 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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| 437 | Hydrolysis of an ester gives acid ( A ) and alcohol B. The acid reduces Fehlings solution. Oxidation of alcohol B gives acid A. The ester is: A. Mehthyl formate B. Ethyl formate c. Methyl acetate D. Ethyl acetate |
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| 438 | When a mixture to ( t- )butyl alcohol and ethyl alcohol is heated with conc. ( H_{2} S O_{4} ) a single ether product is obtained. Identify the product giving proper reasons. |
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| 439 | How does anisole react with ( H N O_{3} ) in presence of Suphuric acid? |
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| 440 | In which of the following reactions, the product obtained is tert-butyl methyl ether? B. ( quad H_{3} C-underset{C}{C}^{C H_{3}}-B r+C H_{3} O H stackrel{O H^{-} N a}{rightarrow} ) c. [ C H_{3} B r+N a^{+} O^{-}-underset{C_{3}}{C_{3}}^{C H_{3}}-C H_{3} rightarrow ] D. ( C H_{3}-O^{-} N a^{+}+C H_{3}-C_{C}-B r rightarrow ) [ _{C H_{3}}^{-} ] |
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| 441 | Ethers containing up to how many carbon atoms are soluble in water, due to their hydrogen bond formation with water molecules? ( A cdot 3 ) B. 4 ( c .5 ) D. |
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| 442 | Major products formed in the reaction of t-butyl methyl ether with ( H I ) are ( A ) and and ( quad mathbf{H}_{3} mathbf{C}-mathbf{O H} ) ( c ) ( mathbf{H}_{3} mathbf{C}-mathbf{O H} quad ) and D and ( mathbf{H}_{3} mathbf{C}-mathbf{O} mathbf{H} ) |
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| 443 | Metallic sodium reacts with methanol and ethanol to give ( O_{2} ) gas. A. True B. False |
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| 444 | Enzymes involved used in the fermentation of cane sugar to alcohol? A. Diastase, invertase B. Invertase, zymase c. Diastase, zymase D. Maltase, zymase |
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| 445 | How is diethyl ether prepared by continuous etherification process? | 12 |
| 446 | STATEMENT-1: The boiling point of ( C_{2} H_{5} O H ) is less than that of ( H_{2} O ) though the molecular weight of ( C_{2} H_{5} O H ) is more than that of water. STATEMENT-2: ( C_{2} H_{5} O H ) molecules are not highly associated through hydrogen bonding as in water. A. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT- 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 |
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| 447 | Reaction of acetic acid, ( C H_{3} C O_{2} H ) | 12 |
| 448 | The antiseptic action of dettol is due to: A. Chloro benzene B. Chloroxylenol c. chloroquine D. chloramphenicol |
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| 449 | An alcohol of formula ( C_{9} boldsymbol{H}_{12} boldsymbol{O} ) reacts with ( N a_{2} C r_{2} O_{7} ) to from a compound having formula ( C_{9} boldsymbol{H}_{10} boldsymbol{O} ). The original alcohol might be ( langlesquarerangle-mathrm{cH}_{2}-mathrm{cH}_{2}-mathrm{cH}_{2}-mathrm{o} ) B. ( c ) D |
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| 450 | Which of the following is correct order of acidic strength for the given compounds: A ( . I>I I>I I I>I V ) ( V ) В. ( I I>I>I I I>I V ) c. ( I I>I I I>I>I V ) ( . I>I I I>I I>I V ) ( V ) |
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| 451 | Methanol is a: A. yellow coloured liquid B. brown coloured liquid C . colourless liquid D. blue coloured liquid |
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| 452 | Products ( A ) and ( B ) respectively are 4 ( B ) c. Reaction is not possibl D. None of thes |
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| 453 | Match the column ( I ) and ( I I ) | 12 |
| 454 | With boiling water or steam, diethylether results in the formation of: A ( cdotleft(C_{2} H_{5}right)_{2} S O_{4} ) в. ( C_{2} H_{5} O H ) c. ( C H_{2}=C H_{2} ) D. ( C_{2} H_{5} O H+C_{2} H_{5} S O_{4} ) |
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| 455 | Which of the following is not correctly matched with its uses? A. Methanol: As a solvent for paints, varnishes etc. B. Ethanol: For denaturing spirit, in manufacture of formaldehyde. C. Ethers: To provide inert medium for chemical reactions, as anaesthetic. D. All are correctly matched. |
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| 456 | Statement-1: In the fermentation process of molasses, along with yeast, ( left(N H_{4}right)_{2} S O_{4} ) and ( left(N H_{4}right)_{3} P O_{4} ) are added. Statement-2: Both ( left(N H_{4}right)_{3} P O_{4} ) and ( left(N H_{4}right)_{2} S O_{4} ) act as food and help in the growth of yeast. A. Statement-1 is True, statement-2 is True; statementis a correct explanation for statement- B. Statement-1 is True, statement-2 is True; statementis NOT a correct explanation for statement- c. Statement- – is True, statement-2 is False D. Statement- 1 is False, statement- 2 is True |
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| 457 | Picric acid is a yellow coloured compound. Its chemical name is A. m-nitrobenzoic acid B. 2,4,6 -trinitropheno c. 2,4,6 -tribromophenol D. p-nitrophenol. |
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| 458 | From methyl alcohol we get: A. bakelite, a hard plastic B. the rubber neoprene C . the plastic perspex D. sponge rubber |
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| 459 | For the following reaction, select the statement that best describes the change. ( boldsymbol{R} boldsymbol{C H}_{2} boldsymbol{O H}+ ) ( boldsymbol{P C C} quadleft[boldsymbol{C _ { 5 }} boldsymbol{H}_{5} boldsymbol{N} boldsymbol{H}^{+} boldsymbol{C l} boldsymbol{C r} boldsymbol{O}_{3}^{-}right] longrightarrow ) A. The alcohol is oxidized to an acid, and the ( C r(V I) ) is reduced B. The alcohol is oxidized to an aldehyde, and the ( C r(V I) ) is reduced c. The alcohol is reduced to an aldehyde, and the ( operatorname{Cr}(I I I) ) is oxidized D. The alcohol is oxidized to a keton, and the ( C r(V I) ) is reduced |
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| 460 | Under suitable condition temperature,pressure and catalyst,methanol can be obtain by: A. partial oxidation of hydrocarbons B. reacting ( H_{2} ) with ( C O ) C. reacting ( H_{2} ) with ( C O_{2} ) D. All the above |
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| 461 | ( O H ) ( C H_{3}-C H_{2}-C H-C H_{2}-C H_{2}- ) ( underset{l}{C} boldsymbol{H}-boldsymbol{C H}_{2}-boldsymbol{C H}_{3} ) ( boldsymbol{C H}_{3} ) The IUPAC name of the compound is: A. 6 -methyl-3-hexanol B. 6-Methy|-3-octanol c. 1-methy|-4-hexanol D. 4-methyl-1-octanol |
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| 462 | Which of the following statements is/are correct? This question has multiple correct options A. The nitration of phenol is faster than phenyl acetate B. The reaction of ( P h O^{ominus} ) is faster than ( p-N C- ) ( C_{6} H_{4} O^{ominus} ) with ( P h C H_{2} C l ) C. Base-catalysed hydrolysis of p-nitrophenyl acetate is faster than phenyl acetate D. Acid-catalysed esterification of PhOH is faster than ( p ) nitrophenol with MeCOOH |
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| 463 | Suggest a sequence of reactions suitable for preparing propanol from ( 2- ) propanol. |
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| 464 | toppr Q Type your question acid such as conc. ( H_{2} S O_{4} ) as a catalyst. The reaction is reversible and generally the equilibrium constant for the esterification is close to ( 1 . ) As it is a reversible reaction, different methods are used to increase the yield of ester. It is established that the mechanism of esterification under such conditions involves initial protonation of the acid followed by the attack of the alcohol as a nucleophile. The correct statement(s) is/are This question has multiple correct options A. When esterification is carried out using molar ratio of acid and alcohol as 1: 10 , the yield of the ester with respect to the acid should be close to ( 90 % ) B. The function of conc.( H_{2} S O_{4} ) is also to increase the free energy change of the reaction and thereby increasing the equilibrium constant C. When an ester is heated with acidified water the protonation will be more favourable at the acyl oxygen atom than at the alkoxy oxygen atom D. When butyl hexanoate is heated with a large excess of methanol in the presence of a small quantity of conc. ( H_{2} S O_{4} ), methyl hexanoate is the major product |
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| 465 | Which of the following species can act as the strongest base? A. ( -O H ) B. ( -O R ) ( mathbf{c} cdot-O C_{6} H_{5} ) ( D ) |
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| 466 | The correct order of boiling point for primary ( (1), ) secondary (2) and tertiary (3) alcohols is: ( mathbf{A} cdot 1>2>3 ) В. ( 3>2>1 ) c. ( 2>1>3 ) D. ( 2>3>1 ) |
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| 467 | Explain the following reactions with suitable example: (a) Reimer-Tiemann reaction (b) Cannizaro reaction (c) Aldol condensation (d) Sandmeyer reaction |
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| 468 | Which one of the following reaction conditions are used for preparing diethyl ether from ethyl alcohol? A ( cdot H I / 200^{circ} C ) в. Сопс.Н( _{2} ) S ( O_{4} / 140^{circ} mathrm{C} ) c. ( N a O H / 70^{circ} mathrm{C} ) D. ( operatorname{NaOC}_{2} mathrm{H}_{5} / 27^{circ} mathrm{C} ) |
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| 469 | Ethers like ROR can be cleaved by concentrated HI but not by HCl because: A . ( I^{-} ) is a weaker nucleophile than ( C l^{-} ) B. ( I^{-} ) is stronger nucleophile than ( C l^{-} ) c. ( S_{N} 1 ) mechanism carried out in this reaction is rapidly in presence of HI D. None of the above |
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| 470 | Reaction of acids with alcohols is also known as: A. esterification B. saponification c. alkalisation D. none of these |
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| 471 | Catalytic dehydrogenation of a primary alcohol gives a: A. secondary alcohol B. aldehyde c. ketone D. ester |
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| 472 | Select the correct order of boiling point: A. diethyl ether ( >n ) -butyl alcohol ( >n ) -butaraldehyde ( >n- ) pentane B. n-butyl alcohol > n-butaraldehyde > n-pentane> diethylether C. n-pentane ( >n ) -butaraldehyde ( >n ) -butyl alcohol ( > ) diethylether D. n-butyl alcohol > n-butaraldehyde > diethylether > npentane |
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| 473 | In the sequence of reactions (A) is: ( (A) stackrel{N a}{rightarrow}(B)^{C_{2} H_{5} I / h e a t} ) ( (boldsymbol{C}) stackrel{boldsymbol{H I} / text {heat}}{rightarrow} boldsymbol{C}_{2} boldsymbol{H}_{5} boldsymbol{I} ) A . acetic acid B. methyl alcohol c. ethyl alcohol D. propionic acid |
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| 474 | A compound ( boldsymbol{X} ) with molecular formula ( C_{3} H_{8} O ) can be oxidized to a compound ( Y ) with the molecular formula ( C_{3} H_{6} O_{2} ) The number of double bonds in ( Y ) is: |
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| 475 | How does the diethyl ether react with the following reagents? a) ( boldsymbol{O}_{2} / ) long contact b) ( H I ) is excess c) ( P C l_{5} ) d) ( H O H ) |
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| 476 | Consider the reactions: Identify ( boldsymbol{A}, boldsymbol{X}, boldsymbol{Y} ) and ( boldsymbol{Z} ) Silver mirror observe A ( . A- ) Ethanol, ( X ) – Acetaldehyde, ( Y ) – Butanone, ( Z ) Hydrazone B. ( A- ) Methoxymethane, ( X ) – Ethanoic acid, ( Y ) – Acetate ion, ( Z ) – hydrazine C. ( A- ) Methoxymethane, ( X ) – Ethanol, ( Y ) Ethanoic acid, ( Z ) – Semicarbazide D. ( A- ) Ethanal, ( X ) – Ethanol, ( Y-B u t-2- ) enal, ( Z ) – Semicarbazone |
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| 477 | In the following reaction Phenol( stackrel{Z n d u s t}{rightarrow} X frac{C H_{3} C l}{a n h . A l c l_{3}} ) ( boldsymbol{Y}^{boldsymbol{a l k} cdot boldsymbol{K} underline{M n} boldsymbol{O}_{4} / triangle} boldsymbol{Z} ) The product ( Z ) is: A. toulene B. benzaldehyde c. benzoic acid D. benzene |
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| 478 | toppr Q Type your question ( A ) B. ( c ) ( D ) |
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| 479 | The number of carbon atoms present in a molecule of simple ether is: A. always even B. always odd c. either even or odd D. unpredictable |
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| 480 | The solubility of alcohols in water gradually increases with molecular weight A. True B. False |
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| 481 | Explain how does the OH group attached to a carbon of benzene ring activate it towards electrophilic substitution? |
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| 482 | The correct structure of ( 7- ) Hydroxyheptan – 2- one is: ( mathbf{A} cdot H O-C H_{2}-left(C H_{2}right)_{4}-C H_{2}-C O C H_{3} ) B ( cdot H O-C H_{2}-left(C H_{2}right)_{3}-C H_{2}-C O C H_{3} ) ( mathbf{c} cdot H O-C H_{2}-left(C H_{2}right)_{3}-C H_{2}-C O C H_{2} C H_{3} ) ( mathbf{D} cdot C H_{3}-C H(O H)-left(C H_{2}right)_{3}-C H_{2}-C O C H_{3} ) |
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| 483 | Which of the following sequences of reactions must be carried out respectively to get a secondary alcohol for primary alcohol? A. Oxidation reaction with ( R-M g-I ), hydrolysis ( / H^{+} ) B. Oxidation reaction with ( R-M g-C l ), hydrolysis/ ( H^{+} ) C . Hydrolysis/ ( H^{+}, ) oxidation reaction with ( R-M g-O ) D. Oxidation |
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| 484 | The IUPAC name is: A. 2-ethyl-2-butanol B. 3-Methyl-3-pentanol c. 3-ethyl-3-methyl-3-pentanol D. 1,1-diethyl ethanol |
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| 485 | The organic compound which when mixed with ethyl alcohol, [ethanol], makes a spurious is: A. methanol B. methanoic acid c. methanal D. ethanoic acid |
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| 486 | ArOR ethers are cleaved to give ( boldsymbol{R I} ) and ( A r O H ) rather than ( A r I ) and ( R O H ) A. True B. False |
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| 487 | Which of the following reactions will yield propan-2-ol? This question has multiple correct options A ( cdot C H_{2}=C H-C H_{3}+H O H stackrel{H}{rightarrow} ) B. ( C H_{3}-C H O^{C H_{3} M g B r / H O H} rightarrow^{C H} ) ( mathrm{c} cdot mathrm{CH}_{2} mathrm{O}^{C_{2} mathrm{H}_{5} text { МуТ } / text {НОН}} ) D. None of the above |
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| 488 | The treatment of a compound ( X ) with ( H I O_{4} ) produces ( C H_{3} C H O ) and ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H O} ). The compound ( mathbf{X} ) is : A. ( C H_{3} C H=C H C H_{2} C H_{3} ) в. ( C H_{3} C H(O H) C H(O H) C H_{2} C H_{3} ) c. ( C H_{3} C H=C H C H=C H_{2} ) D. ( C H_{3} C H(O H) C H_{2} C H O ) |
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| 489 | For the cleavage of ethers by halogen acids, the order of reactivity of halogen acids is: A. ( H I>H B r>H C l ) в. ( H B r>H I>H C l ) c. ( H C l>H B r>H I ) D. ethers do not undergo cleavage |
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| 490 | Phenol is more acidic than: A . acetic acid B. p-methoxyphenol c. p-nitropheno D. 2, 4 dinitropheno |
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| 491 | The best reagent which can carry out this conversion is: [ mathrm{ch}_{3} frac{mathrm{cH}_{3}}{mathrm{C}-mathrm{cH}_{2}-mathrm{oH}} frac{mathrm{reagent}}{mathrm{CH}_{3}} mathrm{CH}_{3} frac{mathrm{CH}_{3}}{mathrm{CH}_{3}} ] A. conc. ( H C l ) в. ( H C l, Z n C l_{2} ) ( c cdot s O C l_{2} ) D. aqueous KOH |
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| 492 | What is IUPAC name of the following compound? ( mathbf{C H}_{3}-mathbf{C H}_{2}-mathbf{C H}_{2}-mathbf{O H} ) A. Propane-1-ol B. Propane-2-ol c. Ethane-1-ol D. Ethane-2-ol |
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| 493 | When phenol reacts with chloroform and an alkali like ( N a O H, ) the compound formed is salicylaldehyde. If we use carbon tetrachloride in place of chloroform, the product obtained is: A. salicylic acid B. cyclohexanol c. phenolphthalein D. salicylaldehyde |
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| 494 | Which of the following is the correct order of boiling point? A. chloroethane < ethane < ethanol B. ethane < chloroethane < ethanol c. ethanol ( < ) ethane ( chloroethane > ethanol |
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| 495 | Alcohols react with active metals e.g. Na, K etc. to give corresponding alkoxides. Write down the decreasing order of reactivity of sodium metal towards primary, secondary and tertiary alcohols. | 12 |
| 496 | Select the correct statement(s) about ether. This question has multiple correct options A. Symmetrical ethers have zero dipole moment. B. Unsymmetrical ethers don’t have zero dipole moment. C. Ethers have lower boiling point as compared to alcohols. D. There extent of H-bonding in ethers are comparable to that in alcohols. |
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| 497 | When phenol is distilled with ( Z n ) dust, the main product is : A. Biphenyl B. Benzene c. Benzaldehyde D. Phenolphthalein |
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| 498 | topp ( E ) Q Type your question A ( (text { curlyvee }) C H_{3} C H_{2} C H-C H_{2} O H ) CHa ( (X) rightarrow overbrace^{mathrm{OH}} mathrm{CH}_{2}^{-} prod_{mathrm{OH}}^{mathrm{CH}-mathrm{OCH}_{3}} ) ( (X) rightarrow overbrace^{mathrm{OH}} mathrm{CH}_{2}-underset{mathrm{O}}{|}^{mathrm{C}-mathrm{OCH}_{3}} ) D ( cdot(curlyvee) C H_{3} C H_{2} C H_{2} C H_{2} C H_{2} O H ) ( (X) rightarrow overbrace{[1]}^{mathrm{O}} mathrm{CH}_{2}-underbrace{mathrm{C}-mathrm{O} mathrm{CH}_{2} mathrm{OH}} ) |
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| 499 | Explain the following reactions: (i) Reimer-Tiemann reaction (ii) Williamson synthesis |
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| 500 | Convert t-Butanol to the given compound. |
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| 501 | The correct order of strength of acidity of the following compounds is: A ( . ) (ii) ( >(mathrm{i})>(text { iii })>(text { iv }) ) B. (i) > (ii) > (iii) > (iv) ( c cdot(text { iv })>(text { iii })>(text { ii })>(i ) ( D cdot(text { iv })>(text { iii })>(i)>(text { ii }) ) |
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| 502 | The correct order of boiling point is: A ( . I>I I>I I I ) B. ( I I I>I I>I ) c. ( I I>I>I I I ) I I ( I>I I I>I I ) 1 |
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| 503 | In the hydrolysis of organic chloride in the presence of a large excess of water, ( boldsymbol{R C l}+boldsymbol{H}_{2} boldsymbol{O} rightarrow boldsymbol{R O H}+boldsymbol{H} boldsymbol{C l} ) A. Molecularity and order of reaction both are 2 B. Molecularity is 2 but order of reaction is 1 c. Molecularity is 1 but order of reaction is also 1 D. Molecularity is 1 and order of reaction is also 1 |
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| 504 | Give the decreasing order of reactivity of the following compounds with HBr. ( (I) ) ( (mathrm{II}) ) ( (mathrm{III}) ) ( (mathrm{IV}) ) ( mathbf{A} cdot I I I>I V>I I>I ) В. ( I I I>I I>I V>I ) c. ( I I I>I I>I>I V ) D. ( I I>I I I>I V>I ) |
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| 505 | ( boldsymbol{H} boldsymbol{O}-boldsymbol{C} boldsymbol{H}_{2}-boldsymbol{C} boldsymbol{H}_{2}-underset{_{O H}}{_{I}}-boldsymbol{C} boldsymbol{H}_{2}- ) ( boldsymbol{O H} frac{boldsymbol{H I O}_{4}}{boldsymbol{Delta}} ) Identify the product of the above reaction. |
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| 506 | Question 10. Arrange the following compounds in decreasing order of acidity. H,O, ROH, HC=CH |
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| 507 | The correct statements about squaric acid? acid A. It is stronger acid than phenol B. It can form two conjugate base C. It can liberate ( C O_{2} ) from ( N a H C O_{3} ) D. The diconjugate base of squaric acid has all ( C-C ) bond lengths are equal |
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| 508 | Question 19. Write the mechanism of acid catalysed dehydration of ethanol to yield ethene. Step involved in acid catalysed dehydration are (1) Protonation of alcohol. (ii) Formation of carbocation (iii) Elimination of a proton. |
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| 509 | How is ethanol produced by fermentation? A. Using anaerobic conditions at ( 30^{circ} mathrm{C} ) B. Using anaerobic conditions at ( 450^{circ} mathrm{C} ) C . Using steam at ( 30^{circ} mathrm{C} ) D. Using steam at ( 450^{circ} mathrm{C} ) |
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| 510 | Question 4. Explain why propanol has higher boiling point than that the hydrocarbon, butane? Boiling point is directly proportional to the intermolecular forces existire in a compound the Boiline |
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| 511 | Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH gives: A . o-cresol B. p-cresol c. Mixture of o-cresol and p-cresol D. Benzoic acid |
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| 512 | n the give reaction, the product(s) obtained is/are: нн,ссн ( _{z} ) сн, о dect ( mathrm{CH}_{2}=mathrm{C}-mathrm{CH}_{2}-mathrm{CH}_{3} ) ( mathrm{CH}_{3}-mathrm{C}=mathrm{CH}-mathrm{CH}_{3} ) ( mathrm{CH}_{3}-mathrm{CH}-mathrm{CH}=mathrm{CH}_{2} ) |
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| 513 | Assertion Kerogen is converted into liquid and gaseous hydrocarbons via a process known as catagenesis. Reason Kerogen is a waxy material obtained from inorganic matter 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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| 514 | Question 5. Alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses. Explain this fact. E Consider polar nature of water as well as alcohol; presence of hydrogen bonding. |
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| 515 | opp | 12 |
| 516 | The compound which has the lowest boiling point is: A ( cdot H_{2} O ) В ( cdot C_{2} H_{5} O H ) ( mathbf{c} cdot C H_{3} O H ) D. ( C H_{3} O C H_{3} ) |
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| 517 | The alcohol which gives the most stable carbonium ion on dehydration is: A ( cdotleft(C H_{3}right)_{2} C H C H_{2} O H ) В . ( left(C H_{3}right)_{3} C-O H ) c. ( C H_{3} C H_{2} C H_{2} C H_{2} O H ) D. ( C H_{3}-C H-C H_{2} C H_{3} ) |
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| 518 | ( boldsymbol{C H}_{2}=boldsymbol{C H}_{2}+boldsymbol{H I} stackrel{A l C l_{3}}{rightarrow} boldsymbol{A} stackrel{A q . boldsymbol{K O H}}{rightarrow} ) ( B^{c o n c . H_{2} S O_{4}} C,^{prime} C^{prime} i s: ) A. Ethoxy ethane B. Ethanol c. Ethanal D. Acetone |
12 |
| 519 | An organic compound of molecular formula ( C_{4} H_{10} O ) does not react with sodium. In excess of ( boldsymbol{H} boldsymbol{I} ), it gives only one type of alkyl iodide. The compound is: A. ethoxy ethane B. 2-methoxy propan c. 1-methoxy propane D. 1-butanol |
12 |
| 520 | Which one of the following is a simple ether? A. ( C H_{3}-O-C_{2} H_{5} ) в. ( C_{6} H_{5}-O-C H_{3} ) c. ( C_{2} H_{5}-O-C_{2} H_{5} ) D. ( C_{3} H_{7}-O-C_{2} H_{5} ) |
12 |
| 521 | How do you convert bromethane into diethyl ether? Given the chemical equation of the reaction |
12 |
| 522 | Benzoylation of phenol in alkaline medium is known as A. Friedel-craft’s reaction B. Wurtz-Fittig reaction c. Schotten-Baumann reaction D. Sabatier Senderens reduction |
12 |
| 523 | Which of the following gives ethyl alcohol by the action of methyl magnesium halide followed by hydrolysis? A. Formaldehyde B. Acetaldehyde c. Acetic acid D. Methyl alcohol |
12 |
| 524 | Questions 11. Which of the following is an appropriate set of reactant for the preparation of 1-methoxy-4-nitrobenzene and why? ONa Br + CH3ONa + CH3Br NO NO2 This reaction involves preparation of ether by Williamson synthesis. It takes place by S2 attack of an alkoxide ion on primary alkyl halide. |
12 |
| 525 | You are given benzene, conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) and ( N a O H . ) Write the equations for the preparation of phenol using these reagents. |
12 |
| 526 | 4 The IUPAC name of ( C H_{3}-C H- ) ( boldsymbol{C H}_{3} ) ( C H_{2}-C H-C H O: ) A. 4 -hydroxy – 2 – methyl pentanal B. 2-hydroxy -4- methyl pentanal C. 4 -hydroxy-2-methyl pentanol D. 2-hydroxy-4- methyl pentanol |
12 |
| 527 | The correct sequence of decreasing acidity is: ( mathbf{A} cdotleft(C H_{3}right)_{3} C O H>left(C H_{3}right)_{2} C H O H>C_{2} H_{5} O H> ) ( C H_{3} O H ) B ( cdot C H_{3} O H>C_{2} H_{5} O H>left(C H_{3}right)_{2} C H O H> ) ( left(C H_{3}right)_{3} C O H ) ( mathbf{c} cdot C_{2} H_{5} O H>C H_{3} O H>left(C H_{3}right)_{3} C O H> ) ( left(C H_{3}right)_{2} C H O H ) ( mathbf{D} cdotleft(C H_{3}right)_{2} C H O H>left(C H_{3}right)_{3} C O H>C_{2} H_{5} O H> ) ( C H_{3} O H ) |
12 |
| 528 | Question 12. You are given benzene, conc. H,SO, and NaOH. Write the equations for the preparation of phenol using these reagents. () Sulphonation of benzene. (ii) Reaction with NaOH and water |
12 |
| 529 | Give the structures and IUPAC names of monohydric phenols of molecular formula, ( C_{7} H_{8} O ) |
12 |
| 530 | In Reimer Tiemann reaction dichlorocarbene acts as: A. nucleophile B. electrophile c. free radical D. all of these |
12 |
| 531 | Write equations involved in the preparation of phenol from cumene. |
12 |
| 532 | Arrange the following in order of decreasing acidic strength.pnitrophenol (I), p-cresol (II), m-cresol (III), phenol (IV): ( A cdot|>||>|||>mid V ) B. IV>|||> || > | C. ( |>|||>||>mid V ) D. ||( >|>1>1 v ) |
12 |
| 533 | The compound (F) is: ( mathbf{A} ) B. c. ( E t-equiv-E t ) D. Both (A) and (B) |
12 |
| 534 | Identify the correct set representing properties of Methanol. A. Colourless, volatile, poisonous, miscible B. Colourless, volatile, non-poisonous, miscible C . Colourless, volatile, poisonous, immiscible D. Colourless, non-volatile, poisonous, miscible |
12 |
| 535 | Ethanol burns to produce carbon dioxide and water and can be used as: A . gas B. fuel c. antioxidant D. free radical |
12 |
| 536 | The IUPAC name of the compound glycerine is: A .1,2,3 -trihydroxy propane B. 3-hydroxy pentane-1,5-diol c. 1,2,3 -hydroxy propane D. propane-1,2,3-triol |
12 |
| 537 | ( y=-1 ) ( left.langlebigcircrangle-mathrm{cH}_{2} mathrm{Br}+mathrm{Ho}-bigcircrightrangle-mathrm{Br} ) ( langlebigcircrangle-_{mathrm{o}_{mathrm{H}}}^{mathrm{cH}_{2}+mathrm{B}_{mathrm{r}}}langlebigcircrangle-mathrm{B}_{mathrm{r}} ) ( left.langlebigcircrangle-mathrm{cH}_{2} prec bigcircrightrangle- ) ов но ( left.langlebigcircrangle-text { сн }_{2} prec bigcircrightrangle ) в |
12 |
| 538 | Which of the following alcohols gives the best yield of dialkyl ether on being heated with a trace of sulphuric acid? A. 2 – Pentanol B. 2 -Methyl – 2 – butanol c. 1- Pentanol D. 2- Propanol |
12 |
| 539 | The distillation of rectified spirit gives absolute ethanol. A . True B. False |
12 |
| 540 | Assertion Ethane is a gas while ethyl alcohol is a liquid. Reason Ethyl alcohol has greater molecular mass than ethane. 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 |
| 541 | IUPAC name is 3-phenylpropan-1-ol. A. True B. False |
12 |
| 542 | Which of the following ether is not cleaved by HI even at ( 525 mathrm{K} ) ? A. ( C_{6} H_{5}-O-C H_{3} ) в. ( C_{6} H_{5}-O-C_{6} H_{5} ) c. ( C_{6} H_{5}-O-C_{3} H_{7} ) D. |
12 |
| 543 | Question 11. Name the enzymes and write the reactions involved in the preparation of ethanol from sucrose by fermentation. |
12 |
| 544 | What is ( boldsymbol{A} ) ? A ( cdot T s O-C H_{2}-C equiv C H ) в. ( T s O_{2}-C H_{2}-C equiv C H ) ( c cdot T s O-C H_{2}-C-C H ) D. none of the above |
12 |
| 545 | ( frac{d}{d} ) | 12 |
| 546 | The correct order according to acidic nature is: A. ( C H_{3} O H<C H_{3} S H<C H_{3} N H_{2} ) в. ( C H_{3} N H_{2}<C H_{3} O H<C H_{3} S H ) ( mathbf{c} cdot C H_{3} S H<C H_{3} O H<C H_{3} N H_{2} ) D. none of these |
12 |
| 547 | ( a ) ( d ) ( d a ) ( cos ) |
12 |
| 548 | What type of spectroscopy would be the best tool to analyze a clear and colorless solution for the presence of a functional group like an alcohol group ( (-O H) ? ) A. uv spectroscopy. B. IR spectroscopy c. Mass spectroscopy. D. Photoelectron spectroscopy |
12 |
| 549 | Which of the following is NOT the process to obtain Phenol? A. Cummene-Peroxidation Process B. Raschig Process c. Sulfonation Process D. Solvays Process |
12 |
| 550 | Glucose or fructose is converted into ( C_{2} H_{5} O H ) in the presence of: A . invertase B. diastase c. maltase D. zymase |
12 |
| 551 | Which of the following catalyst is used in the conversion of water gas and hydrogen into methyl alcohol? ( mathbf{A} cdot M n O ) B. Raney Ni c. ( F e ) D. ( Z n O-C r_{2} O_{3} ) |
12 |
| 552 | Complete the following reactions and identify the products of above reactions ( (a) ) |
12 |
| 553 | Compound (B) and (C) are: ( A ) (B) B. (B) ( c ) (B) ( (mathbf{C}) ) D. (B) ( (mathbf{C}) ) |
12 |
| 554 | ( boldsymbol{C}_{6} boldsymbol{H}_{5} boldsymbol{N} boldsymbol{H}_{2} frac{N a N O_{2}+boldsymbol{H} C l, mathbf{0}^{o} boldsymbol{C}}{longrightarrow} ) ( boldsymbol{X} stackrel{boldsymbol{H}_{2} boldsymbol{O}, boldsymbol{w} boldsymbol{a} boldsymbol{r} boldsymbol{m}}{boldsymbol{Y}} boldsymbol{Y} ) In the above reaction, ( boldsymbol{Y} ) is: ( mathbf{A} cdot C_{6} H_{5} C l ) в. ( C_{6} H_{6} ) c. ( C_{6} H_{5} O H ) D. ( C_{6} H_{5} C H O ) |
12 |
| 555 | The reaction that gives phenol as the end product is/are: This question has multiple correct options ( mathbf{A} ) ( sqrt{ }+operatorname{conc.H}_{2} operatorname{so}_{4} frac{text { Heat }}{text { Fusion }}>frac{mathbf{H}^{+}}{mathbf{H}_{2} mathbf{O}} ) B. ( sqrt{int}^{mathrm{N} mathrm{O}_{2}} frac{mathrm{NaNO}_{2}}{mathrm{HCl}, 0^{circ} mathrm{C}} ) ( c ) ( y_{1}+mathbf{k o H} stackrel{300^{circ} mathbf{C}}{longrightarrow} stackrel{mathbf{H C l}}{longrightarrow} ) ( mathbb{P}+mathrm{CH}_{3}-mathrm{CH}=mathrm{CH}_{2} stackrel{mathrm{H}^{+}}{longrightarrow} frac{mathrm{O}_{2}}{mathrm{KOH}}>frac{mathrm{H}^{+}}{ } ) |
12 |
| 556 | Assertion STATEMENT-1: An alcohol does not react with ( C l^{-} ) ion in aqueous medium, but reacts with concentrated ( H C I ) solution to form alkyl chloride. Reason STATEMENT-2: The strong acid ( (boldsymbol{H} boldsymbol{C} boldsymbol{I}) ) accelerates the removal of proton from ( -O H ) group of alcohol A. STATEMENT-1 is True, STATEMENT-2 is True STATEMENT-2 is a correct explanation for STATEMENT- 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 |
| 557 | Writer the mechanism of acid dehydration of ethanol to yield ethene. |
12 |
| 558 | Which of the following reactions are correctly represented? This question has multiple correct options ( mathbf{A} ) [ mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}=mathrm{CH}_{2} frac{(mathrm{i}) mathrm{D}^{+}}{(mathrm{iij}) mathrm{H}_{2} mathrm{O}} mathrm{CH}_{3}-mathrm{CH}_{2}-underset{mathrm{OH}}{_{mathrm{I}}}-mathrm{CH}-mathrm{CH}_{2} mathrm{D} ] B. [ mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}=mathrm{CH}_{2} frac{(mathrm{i}) mathrm{H}^{+}}{(mathrm{ii}) mathrm{D}_{2} mathrm{O}} mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{CH}_{2} mathrm{O} ] ( c ) [ mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}=mathrm{CH}_{2} frac{(mathrm{i}) mathrm{H}^{+}}{(mathrm{ij}) mathrm{H}_{2} mathrm{O}} mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{CH}_{2} mathrm{O} ] D. [ mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}=mathrm{CH}_{2} frac{(mathrm{i}) mathrm{D}^{+}}{(mathrm{ii}) mathrm{D}_{2} mathrm{O}} mathrm{CH}_{3}-mathrm{CH}_{2}-underset{mathrm{OD}}{_{1}}-mathrm{CH}-mathrm{CH}_{2} mathrm{D} ] |
12 |
| 559 | Hydroboration-oxidation of ( boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C} boldsymbol{H}= ) ( boldsymbol{C H}_{2} ) produces: A. ( C H_{3} C H_{2} C H_{2} O H ) в. ( C H_{3} C H(O H) C H_{3} ) c. ( C H_{3} C H(O H) C H_{2} O H ) D. ( C H_{3} C O C H_{3} ) |
12 |
| 560 | The IUPAC name of this compound is: ( boldsymbol{C H}_{3} quad boldsymbol{O} ) ( boldsymbol{C H}_{3}-boldsymbol{C H}-stackrel{|}{boldsymbol{C}}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2} boldsymbol{O H} ) A. 1 -Hydroxy- 4 -methyl-3-pentanone B. 2-Methyl-5-hydroxy-3-pentanone c. 4-Methyl-3-oxo-1-pentanol D. Hexan-1-one-3-o |
12 |
| 561 | Which one of the following compounds would undergo nitration with the greatest ease? A. benzene B. phenol c. nitrobenzene D. benzoic acid |
12 |
| 562 | Which of the two tautomers is more stable? ( A ) ( B ) c. ( I=I I ) D. None of these |
12 |
| 563 | How will you obtain: (i) Benzene from phenol (ii) Ethylamine from Methyl Alcohol (iii) Ethylene from ethyl alcohol |
12 |
| 564 | In the polar aprotic solvent, the increasing order of nucleophilicity is: ( boldsymbol{C F}_{3} boldsymbol{C H}_{2} boldsymbol{O}^{-}, boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{O}^{-}, boldsymbol{C F}_{3} boldsymbol{C H}_{2} ) A ( cdot C F_{3} C H_{2} O^{-}=C H_{3} C H_{2} O^{-}<C F_{3} C H_{2} S^{-}< ) ( C H_{3} C H_{2} S^{-} ) B. ( C F_{3} C H_{2} O^{-}<C H_{3} C H_{2} O^{-}<C F_{3} C H_{2} S^{-}< ) ( C H_{3} C H_{2} S^{-} ) c. ( C F_{3} C H_{2} O^{-}C F_{3} C H_{2} S^{-}C H_{3} C H_{2} O^{-}>C F_{3} C H_{2} S^{-}> ) ( C H_{3} C H_{2} S^{-} ) |
12 |
| 565 | Which of the following exhibit highest boiling point? ( A ) B. ( c ) ( D ) |
12 |
| 566 | The formation of diethyl ether from ethanol is catalysed by: A. ( H_{2} S O_{4} ) в. ( A l O_{3} ) c. ( C u ) D. ( N i ) |
12 |
| 567 | m-CPBA m-CPBA, A 1,0% 18 H20 30. B (Major): 18 NaOH HO C (Major) CH3 ou (a) A is Lo (b) B is LOH CH; CH3 (6) Bis Hot & Cie Cott (c) B is (d) Cisl You 18 OH OH ОН Jimin |
12 |
| 568 | Which reagent will lengthen the carbon chain by two carbon in one step on reaction with an oragnolithium reagent? A. Acetic acid B. Formaldehyde c. lodo methane D. Ethylene oxide |
12 |
| 569 | On oxidation with acidified ( boldsymbol{K}_{mathbf{2}} boldsymbol{C r}_{mathbf{2}} boldsymbol{O}_{mathbf{7}}, ) an compound gives a ketone which contains same number of carbon atoms as in initial compound. The compound is: A. aldehyde B . ( 1^{0} ) alcohol C ( cdot 2^{0} ) alcohol D. both ( 1^{0} ) and ( 2^{0} ) alcohols |
12 |
| 570 | Common name for methanol is: A. volemitol B. rubbing alcohol c. wood spirit D. xylitol |
12 |
| 571 | Correct order of acidic strength. ( (I) ) ( (|) ) ( mathbf{A} cdot I>I I>I I I ) B. ( I I>I I I>I ) ( mathbf{c} cdot I>I I I>I I ) D. ( I I I>I I>I ) |
12 |
| 572 | On oxymercuration-demercuration, the given compound produces the major product: [ widehat{O} int^{C H_{2}-C H}=C H_{2} ] ( A ) ( widehat{mathrm{O}} mathrm{CH}_{2}-mathrm{CH}-mathrm{CH}_{3} ) ( mathrm{OH} ) в. ( widehat{O} int^{C H}_{2}-C H_{2}-C H_{2}-O H ) ( c ) ( begin{array}{c}widehat{mathrm{O}} mathrm{CH}_{2}-mathrm{CH}-mathrm{CH}_{2} \ mathrm{OH}end{array}_{mathrm{OH}}^{mathrm{T}} ) D. ( widehat{O} int^{C H_{2}-C O O H} ) |
12 |
| 573 | Which statement is INCORRECT. A. Phenol has smaller dipolemoment than methanol. B. Haloarenes are insoluble in water but are soluble in benzene. C. Chloroform contains chlorine but gives no reaction with ( A g N O_{3} ) solution. D. Ethanol has much lower pka value than phenol. |
12 |
| 574 | Arrange the following compounds in increasing order of boiling point Propan ( -1- ) ol, butan -1 -ol, butan – 2 – ol pentan -1 -ol A. Propan-1- ol, butan-2 – ol, butan-1 – ol, pentan-1-ol B. Propan-1- ol, butan-1 – ol, butan – 2 – -이, pentan-1 -ol c. Pentan-1- ol, butan-2 – -ol, butan-1 – ol, propan-1-ol D. Pentan – 1- ol, butan-1 – ol, butan – 2- ol, propan-1 -ol |
12 |
| 575 | Which of the following statement is incorrrect: A. Phenol gives positive bromine water test B. Aniline gives foul smelling compound on reaction with ( C H C l_{3}+K O H ) C. Formic acid gives positive Tollen’s test D. Nitrobenzene gives poitive Tollen’s test |
12 |
| 576 | On treatment with dilute ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) ethene forms ethanol A. True B. False |
12 |
| 577 | Which of the following is pyrogallol? A. в. ( c ) D. |
12 |
| 578 | Which of the following paths is/are feasible for the preparation of ether ( (A) ? ) This question has multiple correct options A. Path I B. Path II c. Path II D. Path IV |
12 |
| 579 | The IUPAC name of the following compound is: A. 1-Phenylpropan-2-ol B. 3-Phenylpropan-2-ol c. 2-Hydroxypropylbenzene D. None of these |
12 |
| 580 | Ethyl alcohol is manufactured from ethylene by: A. permanganate B. catalytic oxidation C. absorption into Conc. ( H_{2} S O_{4} ) followed by hydrolysis D. reduction |
12 |
| 581 | Ethyl alcohol on oxidation with acidified ( K_{2} C r_{2} O_{7} ) gives ethanal A. True B. False |
12 |
| 582 | Diethyl ether dissociates when it reacts with: A . ( N a O H ) в. ( H_{2} O ) c. ( H I ) D. ( K M n O_{4} ) |
12 |
| 583 | Which of the following is not an example of symmetrical ether? A. ( C H_{3}-O-C_{2} H_{5} ) в. ( C_{2} H_{5}-O-_{}^{C H}-C H_{2}-C H_{3} ) c. [ C_{2} H_{5}-O-C_{1}^{prime}-C H_{3} ] D. All of them |
12 |
| 584 | Product of the given reaction: A. Salicylic acid B. 2-Hydroxybenzoic acidd ( c . ) Both A and B D. None of these |
12 |
| 585 | Q Type your question ( mathbf{A} ) ( B ) ( mathbf{C} ) ( D ) |
12 |
| 586 | Mixed ethers are: A. symmetrical ethers B. unsymmetrical ethers C . alkyl aryl ethers D. diaryl ethers |
12 |
| 587 | Dioxane used as a solvent is obtained by distilling with ( mathbf{A} cdot ) glycerol, conc. ( H_{2} S O_{4} ) B. glycerol, conc. ( H_{3} P O_{4} ) C . glycol, conc. ( H_{2} S O_{4} ) D. glycol, conc. ( H_{3} P O_{4} ) |
12 |
| 588 | Which one of the following on oxidation gives a ketone? A. Primary alcohol B. Secondary alcohol c. Tertiary alcohol D. All of these |
12 |
| 589 | Can you explain why is bimolecular dehydran not appropriate for the preparation of ethyl methyl ether? | 12 |
| 590 | The order of reactivity of the following alcohols towards conc. H ( C l ) is: ( mathbf{A} cdot I>I I>I I I>I V ) В . ( I>I I I>I I>I V ) ( mathbf{C} cdot I V>I I I>I I>I ) D. ( I V>I I I>I>I I ) |
12 |
| 591 | What are ethers? How are they classified? |
12 |
| 592 | Complete the blanks by identifying ( boldsymbol{X} ) and ( Y ) A. Ethanal. ethen 3. Ethanol, ethene c. Ethanal, ethyne D. Ethanol, ethyne |
12 |
| 593 | Crown ethers are: A. cyclic ethers B. mixed ethers C. ethers with other several functional groups D. not ethers |
12 |
| 594 | Example of an aromatic ether islare: ( A ) Anisole B. ( c ) D. All of these |
12 |
| 595 | How is methoxyethane prepared from: (a) Methyl iodide (b) Diazomethane |
12 |
| 596 | The incorrect statement about the above reaction is: Product |
12 |
| 597 | How is benzyl alcohol obtained from phenyl magnesium bromide? |
12 |
| 598 | Which of the following alcohol has highest solubility in water? A. Tertiary butyl alcohol B. Secondary butyl alcohol c. Ethylene glycol D. Glycerol |
12 |
| 599 | Question 33. When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place Br CH3-CH=CH-CH, HBr, CH, C–CH2–CH, CH, OH CH, Give a mechanism for this reaction. The secondary carbocation formed in the process rearranges to a more stable tertiary carbocation by a hydride ion shift from 3rd carbon atom. – Br |
12 |
| 600 | Grain alcohol is the common name of: A. propyl alcohol B. methyl alcohol c. ethyl alcohol D. isopropyl alcohol |
12 |
| 601 | Which of the following reactions will not yield phenol? ( A ) B. ( c ) D. |
12 |
| 602 | 140. (і) 0.2% Oso, » P, P can be (ii) t-BuOH or KMnO, dil. (a) OH ОН (b) | LOH ОН d) но (c) ОН |
12 |
| 603 | Give reasons: o-nitrophenol is more volatile than ( mathrm{p} ) nitrophenol |
12 |
| 604 | The most acidic compound among the following is: A. phenol B. ethanol c. 3,5-dinitrophenol D. 4-methoxy phenol |
12 |
| 605 | A compound ( X ) was treated with ( Z n ) dust with simultaneous heating.This resulted in the formation of an aromatic compound ( (X) ) and a white powder ( (A) . A ) was found to be insoluble in water.ldentify correct combination of ( boldsymbol{X} ) and ( A ) respectively. A. Toluene and ( C a O ) B. Chlorobenzene and ( Z n O ) c. Phenol and ( C a O ) D. Phenol and ( Z n O ) |
12 |
| 606 | Methyl amine with nitrous acid gives A. methyl alcohol B. methyl nitrite c. dimethyl ether D. methyl nitrite and dimethyl ether |
12 |
| 607 | Least boiling point is of: A. ethylene glycol B. ether c. water D. phenol |
12 |
| 608 | Among ethanol, dimethyl ether, methanol and propanal, the isomers are A. ethanol, dimethyl ether, methanol and propanal B. ethanol and methanol c. ethanol, dimethyl ether, and methanol D. ethanol and dimethyl ether |
12 |
| 609 | Write equations of the following reactions: (i) Friedel-Crafts reaction alkylation of anisole. (ii) Nitration of anisole. (iii) Bromination of anisole in ethanoic acid medium. (iv) Friedel-Crafts acetylation of anisole. |
12 |
| 610 | Allyl phenyl ether can be prepared by heating: A ( cdot C H_{2}=C H-C H_{2}-B r+C_{6} H_{5} O N a ) В. ( C_{6} H_{5}-C H=C H-B r+C H_{3}-O N a ) c. ( C_{6} H_{5} B r+C H_{2}=C H-C H_{2}-O N a ) D. ( C H_{2}=C H-B r+C_{6} H_{5}-C H_{2}-O N a ) |
12 |
| 611 | Give balanced equations for the following named reactions: (i) Reimer-Tiemann reaction (ii) Rosenmund reaction (iii) Hoffmann’s degradation reaction |
12 |
| 612 | Spirit of wine contains: ( mathbf{A} cdot C H_{3} O H ) в. ( C_{2} H_{5} O H ) с. НСН О D. ( C H_{3} ) СОСН( _{3} ) |
12 |
| 613 | Consider the reaction ( boldsymbol{C}_{3} boldsymbol{H}_{mathbf{7}}-boldsymbol{O} boldsymbol{H}+ ) ( boldsymbol{E} boldsymbol{t}_{3} boldsymbol{O}^{oplus} boldsymbol{B} boldsymbol{F}_{4}^{ominus} rightarrow boldsymbol{C}_{3} boldsymbol{H}_{7}-boldsymbol{O}-boldsymbol{E} boldsymbol{t}+ ) EtO ( boldsymbol{E t}+boldsymbol{H} boldsymbol{B} boldsymbol{F}_{mathbf{4}} ) Which of the following statements is wrong? A. The nucleophile in the reaction is ( C_{3} H_{7} O H ) B. The nucleophile in the reaction is ( B F_{4}^{ominus} ) C. The leaving group is ( E t_{2} O ) D. ( S N^{2} ) reaction occurs. |
12 |
| 614 | Among the following which is least acidic? A. Phenol B . o-cresol c. p-nitrophenol D. p-chlorophenol |
12 |
| 615 | ( frac{phi}{phi} ) | 12 |
| 616 | Give the IUPAC name for the following alcohols. Classify as primary or secondary or teritiary alcohol ( boldsymbol{C H}_{2}=boldsymbol{C H}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{O H} ) | 12 |
| 617 | ( C H_{3} ) ( C H_{3}-C_{I}^{prime}-C H_{2}-C H_{3} ) The correct IUPAC name of the above compound is: A. tert-amyl alcohol B. 2-methylbutan-2-ol c. 2-methylpentan-2-ol D. 1,1 dimethyl propan-1-o |
12 |
| 618 | Assertion Ethanol is a weaker acid than phenol Reason Sodium ethoxide may be prepared by the reaction of ethanol with aqueous |
12 |
| 619 | Identify the correct sequence of given steps for the conversion of calcium carbide to methyl alcohol. (a) Reaction with aqueous ( K O H ) (b) Hydrolysis (c) Reaction with soda lime (d) Reaction with ( H a S O_{4} / H_{2} S O_{4} ) (e) Reaction with ( boldsymbol{H} boldsymbol{g} boldsymbol{S} boldsymbol{O}_{4} ) (f) Reaction with ( P C l_{5} ) A. ( b d e c f a ) B. ( b d c ) a ( f e ) c. ( b ) f ( d ) e a ( c ) D. ( d b c e f a ) |
12 |
| 620 | (1) 1,2 -dihydroxybenzene ( (|) 1,3- ) dihydroxybenzene (III) ( 1,4^{-} ) dihydroxybenzene (IV) Hydroxybenzene The increasing order of boiling points of above-mentioned alcohols is: A. ( I<I I<I I I<I V ) 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 |
| 621 | 8 8 8 8 |
12 |
| 622 | Question 26. How is 1-propoxypropane synthesised from propan-1-ols Write mechanism of this reaction. (1) Williamson’s synthesis or (ii) Dehydration of propan-1-ol. boom |
12 |
| 623 | The correct decreasing order of dehydration of following alcohols with conc. ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) is: ( mathbf{B} ) ( mathbf{D} ) ( A cdot C>A>B>D ) B. ( D>A>C>B ) ( mathrm{c} cdot mathrm{A}>mathrm{B}>mathrm{C}>mathrm{D} ) ( D cdot D>C>A>B ) |
12 |
| 624 | 8 8 8 |
12 |
| 625 | (a) How will you obtain following from phenol? (i) 2,4,6 Tribromophenol (ii) Picric-Acid (b) What is the reaction of Diethyl ether with ( boldsymbol{H} boldsymbol{I} ) -Acid? |
12 |
| 626 | Arrange according boiling point: ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}_{3}, boldsymbol{C H}_{3} boldsymbol{C H O}, boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C} ) |
12 |
| 627 | When 3 -methylbutan-2-ol is treated with HBr, the following reaction takes place: Give a mechanism for this reaction. (Hint : The secondary carbocation formed in step II rearranges to a more stable tertiary carbocation by a hydride ion shift from 3rd carbon atom. |
12 |
| 628 | An industrial method for the preparation of methanol is: A. by catalytic reduction of carbon monoxide B. by reacting methane with steam in presence of a catalyst C . by reduction of ( H C H O ) with ( L i A l H_{4} ) D. by reduction of ( H C H O ) with aqueous ( N a O H ) |
12 |
| 629 | How the following conversions can be carried out? Propene to propan-1-ol |
12 |
| 630 | Which of the following alcohol is used for making acetaldehyde? A. Ethanol B. Methanol c. Propanol D. None of the above |
12 |
| 631 | Which of the following is the ( A ) in the given reaction A. Benzene diazonium chloride B. Benzene c. Nitro benzen D. Amino benzene |
12 |
| 632 | Ethyl alcohol exhibits acidic character on reacting with: A . Acetic acid B. Sodium metal c. Hydrogen iodide D. Acidic potassium dichromate |
12 |
| 633 | Which of the following reactions is possible? ( A ) [ mathrm{CH}_{3} mathrm{CH}_{2} mathrm{ONa}+mathrm{PhBr} rightarrow mathrm{CH}_{3} mathrm{CH}_{2} mathrm{O}-mathrm{Ph} ] в. [ ^{left(mathrm{CH}_{3}right)_{3} mathrm{C}-mathrm{ONa}+mathrm{CH}_{3} mathrm{CH}_{2} mathrm{Br} rightarrow}_{left(mathrm{CH}_{3}right)_{3}} overrightarrow{mathrm{C}-mathrm{O}-mathrm{CH}_{2}-mathrm{CH}_{3}} ] c. [ begin{aligned} mathrm{CH}_{3} mathrm{CH}=mathrm{CH}-mathrm{ONa}+mathrm{CH}_{3} mathrm{CH}=mathrm{CH}-mathrm{Br} rightarrow \ mathrm{CH}_{3} mathrm{CH}=mathrm{CH}-mathrm{O}-mathrm{CH}=mathrm{CH}-mathrm{CH}_{3} end{aligned} ] D. [ begin{array}{l} left(mathrm{CH}_{3}right)_{3} mathrm{C}-mathrm{CH}_{2}-mathrm{ONa}+left(mathrm{CH}_{3}right)_{3} mathrm{C}-mathrm{CH}_{2} mathrm{Br} \ quad rightarrowleft(mathrm{CH}_{3}right)_{3} mathrm{C}-mathrm{CH}_{2}-mathrm{O}-mathrm{CH}_{2}-mathrm{C}left(mathrm{CH}_{3}right)_{3} end{array} ] |
12 |
| 634 | Which reagent can convert acetic acid into ethanol? ( mathbf{A} cdot S n+H C l ) B. ( quad H_{2}+P t ) c. ( quad ) Li ( A l H_{4} ) D. ( N a+ )alcohol( l ) |
12 |
| 635 | In the reaction the major product formed is: ( A ) B. ( c ) D. |
12 |
| 636 | What are the products when ethyl isopropyl ether is cleaved with concentrated ( H I ? ) A. Ethanol and 2-iodo-2-methylpropane B. Ethanol and 2-methylpropane c. lodoethane and isopropyl alcohol D. lodoethane and 2-methylpropane |
12 |
| 637 | 2 2 8 8 |
12 |
| 638 | How do you condemn the use of alcohol as a social practice. |
12 |
| 639 | Which of the following products are formed when ethyl alcohol is heated with ( boldsymbol{H}_{2} boldsymbol{S O}_{4} ? ) This question has multiple correct options A. Ethene B. Diethyl ether c. Dimethyl ether D. Ethane |
12 |
| 640 | Question 15. Explain why low molecular mass alcohols are soluble in water? |
12 |
| 641 | 42. Wood spirit is (1) Methyl alcohol (2) Ethyl alcohol (3) Butyl alcohol (4) Propyl alcohol |
12 |
| 642 | Phenol is acidic because of the resonance stabilization of its conjugate base, namely: A. phenoxide ion B. epoxide ion c. benzoate ion D. none of these |
12 |
| 643 | (a) What happens when Phenol is treated with benzene diazonium chloride? Give balance chemical equation. |
12 |
| 644 | Q Type your question ( (mathbf{A}) ) ( A ) and ( B ) and ( c ) ( D ) |
12 |
| 645 | Which of the following reacts fastest with conc. ( boldsymbol{H} boldsymbol{C l} ) ? A. ( left(C H_{3}right)_{3} C O H ) в. ( C H_{2}=C H-C H_{2} O H ) ( c ) D. |
12 |
| 646 | Question 3. Write the IUPAC name of the compound given below CH3-CH2-C=c-OH 111 CH3 CH2OH |
12 |
| 647 | ( boldsymbol{C}left(boldsymbol{C H}_{3}right)_{2}=boldsymbol{C}left(boldsymbol{C H}_{3}right)_{2} frac{C l_{2}}{boldsymbol{H}_{2} boldsymbol{O}} boldsymbol{A} stackrel{boldsymbol{O H}^{-}}{boldsymbol{beta}} boldsymbol{B} ) The compound ( B ) is: ( A ) в. ( left(C H_{3}right)_{2} C-Cleft(C H_{3}right) ) он ( C l ) ( mathrm{c} cdotleft(C H_{3}right)_{2} C-Cleft(C H_{3}right)_{2} ) ( _{O H O H} ) D. none of the above |
12 |
| 648 | ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-underset{boldsymbol{C H}_{3}}{boldsymbol{C}}^{boldsymbol{C H}_{3}}- ) ( C H_{2}-C H_{2}-O H frac{H^{+}}{Delta}(A) ) Product (A) is: A. ( C H_{3}-C H_{2}-C H_{2}-C H_{2}-C_{C H_{3}}=C H-C H_{3} ) в. ( C H_{3}-left(C H_{2}right)_{3}-Cleft(C H_{3}right)=Cleft(C H_{3}right)_{2} ) c. ( C H_{3}-C H_{2}-C H_{2}-C H_{2}-C_{I H_{3}}=C H_{2} ) |
12 |
| 649 | Q Type your question ( mathbf{A} ) ( B ) ( mathbf{C} ) ( D ) |
12 |
| 650 | t-butyl methyl ether on reaction with anhydrous ( H I ) gives an alcohol ( (A) ) and halide (B). Which of the following statement is correct? This question has multiple correct options |
12 |
| 651 | ( C_{2} H_{5} O H rightarrow C_{2} H_{5} B r . ) In this conversion, the reagent is: A. ( H B r ) B. ( B r_{2}+C C l_{4} ) c. ( B r_{2} ) water D. ( K B r ) |
12 |
| 652 | Write the chemical reactions of ( C_{2} H_{5} O H ) with ( P C l_{3} ) and ( P C l_{5} ) separately |
12 |
| 653 | ( b ) ( d ) ( d ) ( y ) |
12 |
| 654 | Write the equations involved in the following reactions: (i) Reimer – Tietmann reaction (ii) Williamson synthesis |
12 |
| 655 | What is true regarding the following acid catalyzed esterification (Fischer) reaction ? ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C O O H}+boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{O H} stackrel{boldsymbol{H}^{+}}{longrightarrow} ) ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C O O C}_{2} boldsymbol{H}_{5} ) This question has multiple correct options A. The reaction involves production on ( s p^{3} ) -oxygen of acid in the first step B. The reaction involves protonation on ( s p^{2} ) -oxygen of acid followed by formation of acylium ion ( left(R O C^{+}right) ) in the first step C. The slowest step of reaction is the nucleophilic attack of alcohol on ( s p^{2} ) carbon of acid D. Alcohol undergoes protonation in the first step |
12 |
| 656 | In iodine charge transfer test the color of ether compound formed is: A. blue B. pale yello c. brown D. dark red |
12 |
| 657 | derivative of phenol? ( A ) ( B ) ( c ) ( D ) |
12 |
| 658 | Solubility of alcohols in water is to that of hydrocarbons of comparable molecular masses. A. greater than B. similar c. lesser than D. none of these |
12 |
| 659 | Identify the final product of the reaction [ mathrm{CH}_{3} mathrm{MgBr}+mathrm{CH}_{2} mathrm{CH}_{2} rightarrow stackrel{mathrm{H}, mathrm{O}^{+}}{longrightarrow} ? ] ( mathbf{A} cdot C H_{3} O H ) в. ( C H_{3} C H_{2} O H ) ( c ) [ triangle ] D. ( C H_{3} C H_{2} C H_{2} O H ) |
12 |
| 660 | Which of the following is(are) true statement(s)? Consider the following reaction [ mathrm{CH}_{2}=stackrel{mathrm{CH}_{3}}{mathrm{C}-mathrm{CH}_{2}} stackrel{mathrm{CH}_{3}}{mathrm{CH}-mathrm{CH}_{2} mathrm{OH}} frac{mathrm{H}_{2} mathrm{SO}_{4}}{longrightarrow} underbrace{mathrm{CH}_{3}}_{mathrm{CH}_{3}} ] This question has multiple correct options A. Reaction is initiated by protonation of ( -O H ) followed by formation of carbocation intermediate B. Reaction is initiated at ( C=C ) bond forming a tertiary carbocation C. Here intramolecular reaction is favoured by entropy of reaction D. The same reaction can also be done using ( N a O H ) catalyst |
12 |
| 661 | Statement ( I: H_{2} S O_{4} ) is not used during the reaction of alcohols with ( K I ) Statement II : ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) oxidises ( boldsymbol{K} boldsymbol{I} ) to ( boldsymbol{I}_{2} ) and will prevent reaction of alcohol with ( boldsymbol{K} boldsymbol{I} ) A. Statement I & Statement II are correct and statement I is correct explanation of statement B. Statement I & Statement II are correct and statement Il is not correct explanation of statement c. Statement lis correct and Statement II is wrong D. Statement I is wrong and Statement II is correct |
12 |
| 662 | Explain why phenol in water or polarprotic give ( boldsymbol{O}-boldsymbol{P} ) tribromo product but in nonpolar medium like ( C S_{2} C C l_{2} ) image ortho or ( p ) bromo product? |
12 |
| 663 | The correct combination of names for isomeric alcohols with molecular formula ( C_{4} H_{10} O ) is/are: This question has multiple correct options |
12 |
| 664 | Which of the following substance can be used as a raw material for obtaining alcohol? A. Potatoes B. Molasses c. Maize D. All of the above |
12 |
| 665 | Write IUPAC name of the given compound: [ mathbf{C H}_{3}-underset{mathbf{C} mathbf{H}_{3}}{mathbf{I}} mathbf{U}-mathbf{C}_{mathbf{O H}}-frac{mathbf{C} mathbf{H}_{3}}{mathbf{C} mathbf{H}_{3}}-mathbf{C H}_{3} ] |
12 |
| 666 | ( begin{array}{cc}boldsymbol{C H}_{mathbf{3}}-underset{mathbf{O}}{mathbf{C}} boldsymbol{H}- & boldsymbol{C} boldsymbol{H}-boldsymbol{C} boldsymbol{H}_{3} \ & boldsymbol{O} boldsymbol{H}end{array} ) IUPAC name of the given compound is : A. Butane-2,3-diol B. 1-Methy|-propane-1,2-diol c. Both (A) and (B) D. None of these |
12 |
| 667 | The correct IUPAC name of the above given compound is: A. 2-epoxy-1-chloropropane B. 1,2-epoxy-1-chloropropane c. epoxy-1-chloropropane D. 3-Chloro-1,2-epoxypropane |
12 |
| 668 | In the reaction [ left(boldsymbol{C H}_{3}right)_{3} boldsymbol{C}-boldsymbol{O}-boldsymbol{C H}_{2} boldsymbol{C H}_{3}+ ] [ begin{array}{c} boldsymbol{H I} \ (mathbf{1 m o l e}) end{array} ] the product(s) formed is(are): ( A ) [ left(C H_{3}right)_{3} C-O H text { and } C H_{3} C H_{2} I ] в. [ left(C H_{3}right)_{3} C-I text { and } C H_{3} C H_{2} O H ] c. ( left(C H_{3}right)_{3} C-I ) and ( C H_{3} C H_{2} I ) D. [ begin{array}{ccc} C- & O^{+} & -C H_{2} C H_{3} I end{array} ] [ left(C H_{3}right)_{3} ] |
12 |
| 669 | The formation of oxanium salt of ether is due to: A. protonation of 0 atom in ether B. donation of an e pair by 0 atom in ether c. the attachment of a proton to 0 atom in ether by coordination D. all the above |
12 |
| 670 | topp ( Q ) Type your question ( A ) B. ( c ) ( D ) |
12 |
| 671 | The product obtained by heating diethyl ether with ( boldsymbol{H} boldsymbol{I} ) is: A. ( C_{2} H_{5} I ) В ( cdot C_{2} H_{5} O H ) ( mathbf{c} cdot C_{2} H_{5} O H+C_{2} H_{5} ) D. ( C_{2} H_{5}-C_{2} H_{5} ) |
12 |
| 672 | ( delta_{j} ) | 12 |
| 673 | Grain alcohol, a product of yeast fermentaion of sugars in grains and fruits, is: A. Ethanol B. 1-Butanol c. 2-Methyl-1-propanol D. Methanol |
12 |
| 674 | what is the product on the IOIIOwIng reaction? ( A ) ( B ) ( c ) ( D ) |
12 |
| 675 | Which is used in alcoholic beverages? A. Methanol B. Ethanol c. Phenol D. Glycerol |
12 |
| 676 | Which of the following statements is/are correct? This question has multiple correct options A. The common name of benzene- 1,2 -diol is catechol B. The common name of benzene- 1,3 -diol is resorcinol. C. The common name of benzene- 1,4 -diol is quinol, D. The common name of benzene- 1,4 -diol is hydroquinone |
12 |
| 677 | What is the molecular formula of pyrogallol? ( mathbf{A} cdot C_{6} H_{4}(O H) ) в. ( C_{6} H_{5}(O H)_{3} ) c. ( C_{6} H_{3}(O H)_{3} ) D. ( C_{6} H_{5} O H ) |
12 |
| 678 | ( a c ) Chlorobenzene Reaction ( rightarrow ) Salicylaldehyde. ( X ) and ( Y ) reactions are respectively: A. Fries rearrangement and Kolbe-Schmidt B. Cumene and Reimer-Tiemann c. Dow and Reimer-Tiemann D. Dow and Friedal-Craft |
12 |
| 679 | 5 3 3 8 8 |
12 |
| 680 | Which yields isopropyl methyl ether as the major product with little or no by products? A ( cdotleft(C H_{3}right)_{2} C H O^{-} N a^{+}+C H_{3} I longrightarrow ) в. ( C H_{3} O N a+left(C H_{3}right)_{2} C H I ) c. ( left(C H_{3}right)_{2} C H O H+C H_{3} O H stackrel{H_{2} S O_{4}}{longrightarrow} ) D. All three gives isopropyl methyl ether as the major product |
12 |
| 681 | Question 9. What happens when benzene diazonium chloride is heated with water? |
12 |
| 682 | ( C_{n} H_{2 n+1}(O H)_{3} ) is a general formula for trihydric alcohols. A. True B. False |
12 |
| 683 | Question 2. Write the IUPAC name of the following compounds. NO₂ 13 ( &Hz-ah-ah-ah-ah-ah, 13 W i OCH; CH, OH CH OH |
12 |
| 684 | Give the IUPAC name of ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}- ) ( boldsymbol{C H}(boldsymbol{O H})-boldsymbol{C H}_{3} ) |
12 |
| 685 | The reaction, ( boldsymbol{R} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C O O H} frac{boldsymbol{R} e d boldsymbol{P}}{boldsymbol{B r}_{2}} ) ( boldsymbol{R}-boldsymbol{C} boldsymbol{H}_{2}-underset{boldsymbol{B} boldsymbol{r}}{boldsymbol{C}} boldsymbol{H}-boldsymbol{C O O H} ) is called: A. Reimer-Tiemann reaction B. Hell-volhard-zelinsky reaction c. Cannizzaro reaction D. Sandmeyer reaction |
12 |
| 686 | Which of the following phenols has lowest solubility in water? A. Phenol B. o-Nitrophenol C. m-Nitrophenol D. p-Nitrophenol |
12 |
| 687 | Among the following four compounds (i) Phenol (ii) Methyl phenol (iii) Meta-nitrophenol (iv) Para-nitrophenol The acidity order is: A ( cdot(i v)>(i i i)>(i)>(i i) ) в. ( (i i i)>(i v)>(i)>(i i) ) c. ( (i)>(i v)>(i i i)>(i i) ) D. ( (i i)>(i)>(i i i)>(i v) ) |
12 |
| 688 | The intermediate form in the preparation of phenol by sodium benzene sulphonate is: A. sodium propoxide B. sodium phenoxide c. sodium ethoxide D. None of these |
12 |
| 689 | Write the mechanism of hydration of ethene to yield ethanol | 12 |
| 690 | Complete the following reaction Propene ( frac{boldsymbol{H}_{2} boldsymbol{S O}_{4}}{boldsymbol{H}_{2} boldsymbol{O}, boldsymbol{Delta}} boldsymbol{A} ) | 12 |
| 691 | Constituent of gasohol is: ( mathbf{A} cdot 90 % ) petrol ( +10 % ) alcohol B. 80% petrol + 20% ethanol C . ( 60 % ) petrol ( +40 % ) ethanol D. 50% petrol + 50% ethanol |
12 |
| 692 | is prepared on a large seals from water gas. A. Methanol B. Ethanal c. Methane D. Ethanol |
12 |
| 693 | The number of monochloro derivaties of 2-methoxy propane are possible are: A .2 B. ( c cdot 3 ) ( D ) |
12 |
| 694 | –CH ОН CH=CH |
12 |
| 695 | Which of the following has a higher boiling point? A. Butanol B. Butanal c. Both of them have similar boiling point D. Cannot say anything |
12 |
| 696 | Question 5. What is denatured alcohol? | 12 |
| 697 | For phenol, which of the following statements is correct? A. It is insoluble in water B. It has higher boiling point than toluene C. It does not shows acidic property D. It has lower melting point compared to aromatic hydrocarbons of comparable molecular weight |
12 |
| 698 | 90. What is the major dehydration product in the following reaction? OH H2PO4 Heat |
12 |
| 699 | Phenol with ( C C l_{4} ) and ( K O H ) gives salicylic acid. The reaction is known as: A. Friedel-Craft reaction B. Reimer – Tiemann reaction c. Rosenmund’s reaction D. siemlet reaction |
12 |
| 700 | Write the name and formula of the second member of the carbon compounds having functional group- ОН. |
12 |
| 701 | Salicylic acid is produced when phenol in alcoholic KOH is treated with A. ( C H_{3} C l ) в. ( C H C l_{3} ) ( mathbf{c} cdot C H_{2} C l_{2} ) D. ( C C l_{4} ) |
12 |
| 702 | Ethylbenzene with bromine in presence of ( F e B r_{3} ) predominantly gives ( A ) B. ( c ) ( D ) |
12 |
| 703 | Alcohols containing only up to carbon atoms are completely miscible with water A . 10 B. 3 ( c cdot 8 ) D. 14 |
12 |
| 704 | When phenol is treated with bromine water, the product formed is : A. ( o ) -Bromo phenol B. ( p ) – Bromo phenol c. ( m ) -Bromo phenol D. 2,4,6 -Tribromo phenol |
12 |
| 705 | Anisole on reaction with chloromethane in presence of anhydrous ( A l C l_{3} ) gives A. o-methyl anisole and p-methoxy anisole B. p-methyl anisole and p-methoxy anisole c. o-methyl anisole and p-methyl anisole D. o-methoxy acetphenone and p-methoxy acetophenone |
12 |
| 706 | How would you synthesize an alcohol from appropriate alkenes? | 12 |
| 707 | Question 6. What is meant by hydroboration-oxidation reaction? Illustrate it with an example. Addition of diborane to alkenes followed by oxidation. |
12 |
| 708 | Arrange the following in order of decreasing acidic strength. nitrophenol (1), p-cresol (II), m-cresol phenol (IV) : A ( . I>I V>I I>I I I ) ( I ) B. ( I V>I I I>I I>I ) c. ( I>I I>I I I>I V ) ( . I I I>I I>I>I V ) ( V ) |
12 |
| 709 | The distillation of phenol with zinc dust gives: ( mathbf{A} cdot C_{6} H_{6} ) в. ( C_{6} H_{5}-C_{6} H_{5} ) c. ( C_{6} H_{1} ) D. ( C_{6} H_{5}-O-C_{6} H_{5} ) |
12 |
| 710 | How will you convert: (i) Propene to Propan-2-ol? (ii) Phenol to 2,4,6-trinitrophenol? |
12 |
| 711 | Write the balanced equation for the following:Bromoethane and an aqueous solution of sodium hydroxide. A. ( C_{2} H_{5} B r+N a O H rightarrow C_{2} H_{6} ) в. ( C_{2} H_{5} B r+N a O H rightarrow C_{2} H_{5} O H ) c. ( C_{2} H_{5} B r+N a O H rightarrow C_{2} H_{4} O ) D. ( C_{2} H_{5} B r+N a O H rightarrow C_{2} H_{2} O ) |
12 |
| 712 | Which one of the following is oxidised by ( mathrm{MnO}_{2} ? ) A ( cdot mathrm{C}_{6} mathrm{H}_{5}-mathrm{CH}_{2}-mathrm{OH} ) B. ( mathrm{CH}_{2}=mathrm{CH}-mathrm{CH}_{2}-mathrm{CH}-mathrm{CH}_{3} ) c. ( mathrm{CH}_{3}-mathrm{CH}=mathrm{CH}-mathrm{CH}-mathrm{CH}_{3} ) D. ( mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{OH} ) |
12 |
| 713 | Which one of the following is a tertiary alcohol? A. ( C H_{3} C H_{2} C H_{2} O H ) в. ( C H_{3} C H(O H) C H_{3} ) c. ( left(C H_{3}right)_{2} ) СНСН( _{2} ) ОН D. ( left(C H_{3}right)_{3} C O H ) |
12 |
| 714 | Which of the following is used as freezing mixture? A. Mixture of ether and liquid ( C O_{2} ) B. Mixture of ether and ethyl alcohol C. Mixture of ether and dry ice D. Mixture of ethyl alcohol and dry ice |
12 |
| 715 | Assertion o-Nitrophenol is more acidic than meta m-Nitrophenol Reason o-Nitrophenol has more I effect than ( m- ) Nitrophenol Read the above assertion and reason and choose the correct statement regarding it. 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 |
| 716 | Question 29. Explain the fact that in aryl alkyl ethers (i) the alkoxy group activates the benzene ring towards electrophilic substitution. (ii) it directs the incoming substituents to ortho and para positions in benzene ring. |
12 |
| 717 | Among the compounds ( I-I V ), the compound having the lowest boiling point is: ( A cdot I ) B. II c. ( I I I ) D. ( I V ) |
12 |
| 718 | How is phenol prepared from Benzene Sulphonic acid? | 12 |
| 719 | Match the column. | 12 |
| 720 | The product formed when ethene gas reacts with water in the presence of sulphuric acid is : A. ethanol B. ethanal c. ethanoic acid D. ethanoate |
12 |
| 721 | 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 |
| 722 | Why is sulphuric acid not used during the reaction of alcohols with KI? | 12 |
| 723 | Tert-butyl methyl ether on treatment with hydrogen iodide in cold gives: A. tert-butyl iodide and methyl iodide B. tert-butyl alcohol and methyl alcohol C. tert-butyl alcohol and methyl iodide D. tert-butyl iodide and methyl alcohol |
12 |
| 724 | Compound ( (A) C_{5} H_{10} O ) forms a phenylhydrazone and gives negative Tollen’s and iodoform test. Compound (A) on reduction gives n-pentase. Compound ( (boldsymbol{A}) ) is: A . a primary alcohol B. an aldehyde c. a ketone D. a secondary alcohol |
12 |
| 725 | 143. Addition of OsO, to cyclopentene would give a product which is (a) achiral (b) racemic (c) meso (d) optically active |
12 |
| 726 | Cumene on reaction with oxygen followed by hydrolysis gives? ( mathbf{A} cdot C H_{3} O H ) and ( C_{6} H_{5} C O C H_{3} ) B. ( C_{6} H_{5} O H ) and ( left(C H_{3}right)_{2} O ) ( mathbf{c} cdot C_{6} H_{5} O C H_{3} ) and ( C H_{3} O H ) D. ( C_{6} H_{5} O H ) and ( C H_{3} C O C H_{3} ) |
12 |
| 727 | ( begin{array}{cc}C_{4} H_{6} O_{4} stackrel{Delta}{longrightarrow} C_{3} H_{6} O_{2} frac{text {sodalime}}{Delta} & C \ A & Bend{array} ) Compound ‘ ( C^{prime} ) is a hydrocarbon, occupying approx ( 0.75 L ) volume per gram. Identify ( ^{prime} A^{prime} ) and ( ^{prime} B^{prime} ) A. tartaric acid, propanoic acid B. Succinic acid, succinic anhydride C . Maleic anhydride, maleic acid D. Methyl malonic acid, propanoic acid |
12 |
| 728 | Explain the following behaviours. (i) Alcohols are more soluble in water than the hydrocarbons of comparable molecular masses. (ii) Ortho-nitrophenol is more acidic than ortho-methoxyphenol |
12 |
| 729 | + NaBI Question 25. Illustrate the examples the limitations of Williamson’s synthesis for the preparation of certain types of ethers. Tertiary alkyl halides readily give elimination product with strong bases like alkoxide ions. The C-X bond of alkyl halid |
12 |
| 730 | An organic compound of molecular formula ( C_{4} H_{10} O ) does not react with sodium. With excess of HI, it gives only one type of alkyl iodide. The compound is : A. unsymmetrical ether B. symmetrical ether c. alcohol D. none of these |
12 |
| 731 | Which of the following compounds is stable? ( mathbf{A} cdot C H_{3} C H(O H)_{2} ) B. ( left(C H_{3}right)_{2} C H(O H)_{2} ) ( mathbf{c} cdot C C l_{3} C H(O H)_{2} ) D. None of these |
12 |
| 732 | Which of the following is the correct increasing order of boiling point of the following compounds? I) ( boldsymbol{C H}_{3}-boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{O H} ) II) ( boldsymbol{C} boldsymbol{H}_{3}-boldsymbol{C} boldsymbol{H}-boldsymbol{C} boldsymbol{H}_{3} ) ( boldsymbol{O} boldsymbol{H} ) III) ( boldsymbol{C H}_{3}-boldsymbol{O}-boldsymbol{C H}_{2}-boldsymbol{C H}_{3} ) ( mathbf{A} cdot l l<l<l l l ) в. ( | l<l l<l ) c. ( l<l l<l l l ) D. ( l l<l l l<l ) |
12 |
| 733 | ( C-O-C ) bond in ethers can be cleaved by: This question has multiple correct options |
12 |
| 734 | toppr Q Type your question 4 ( B ) ( c ) ( D ) |
12 |
| 735 | An organic compound ( (B) ) is formed by the reaction of ethylmagnesium iodide ( left(boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{M} boldsymbol{g} boldsymbol{I}right) ) with a substance ( (boldsymbol{A}) ) follow by treatment with dilute aqueous acid. Compound ( (B) ) dose not react with ( P C C ) in dichloromethane. Identify ( (A) ? ) A. 0 ( C H_{3}-C-H ) B. ( quad o ) I [ C H_{3} C H_{2} C C H_{3} ] ( mathbf{c} cdot H_{2} C=O ) D. |
12 |
| 736 | The IUPAC name of ( left(boldsymbol{C H}_{3}right)_{2} boldsymbol{C H C H}_{2} boldsymbol{C H}_{2} boldsymbol{O H} ) is: A. 3-Methyl butan-1-ol B. 2-methyl pentan-1-ol c. 3-ethyl pentan-1-o D. 2-ethyl butan-1-ol |
12 |
| 737 | Explain why is ortho nitrophenol more acidic than ortho methoxyphenol? | 12 |
| 738 | Out of benzene and phenol, phenol is more easily nitrated because A. presene of -OH group in phenol increases the electron density at ortho and para – position B. presene of -OH group in phenol decreases the electron density at ortho and para – position c. nitration being electrophilic substitution requires less density at ortho and para- position D. phenol is more reactive than benzene due to -R effect |
12 |
| 739 | Destructive distillation of wood in the laboratory will result in the formation of A. Ethanol B. Methane c. Methanol D. Butane |
12 |
| 740 | The major product(s) of the following reaction is(are): ( A cdot P ) в. ( Q ) ( c . R ) D. |
12 |
| 741 | Correct order of boiling point is: A. Methanol < ethylene glycol < ethanol B. Methanol < ethanol < ethylene glycol C. Ethanol < ethylene glycol < methanol D. Ethylene glycol < methanol < ethanol |
12 |
| 742 | Which one of the following methods is used to prepare ( M e_{3} ) COEt with a good yield? A . Mixing EtONa with ( M e_{3} C C l ) B. Mixing ( M e_{3} C O N a ) with ( E t C l ) C. Heating a mixture of ( (1: 1) E t O H ) and ( M e_{3} C O H ) in the presence of ( operatorname{conc} . H_{2} S O_{4} ) D. Treatment of ( M e_{3} C O H ) with ( E t M g I ) |
12 |
| 743 | The boiling point of phenols are higher than the hydrocarbons of comparable masses due to: A. more polarising power B. presence of hydrogen bonding c. resonance stabilisation D. acidic character |
12 |
| 744 | Q Type your question ( A ) B ( c ) ( D ) |
12 |
| 745 | 8 ( b ) 8 8 |
12 |
| 746 | ( = ) ( d_{c} ) ( d sigma ) |
12 |
| 747 | Arrange the following compounds in increasing order of boiling point. ( begin{array}{ll}text { Propan-1-ol } & text { Butan-1-ol } \ text { I } & text { II } \ text { Butan-2-ol } & text { Pentan-1-ol } \ text { III } & text { IV }end{array} ) A. ( I<I I I<I I<I V ) В. ( I I<I I I<I V<I ) c. ( I I<I V<I I I<V I ) D. ( I I I<I<I I<I V ) |
12 |
| 748 | The ether which on hydrolysis gives single product is: A. phenetol B. tetrahydrofuran c. anisole D. all of the above |
12 |
| 749 | The compound with formula ( C_{6} H_{10} O ) is: Yellow ppt. ( A ) B. ( c ) 4-methoxypent-2-yne Chemical Formula: ( C_{6} H_{10} O ) D. none of the above |
12 |
| 750 | Predict the major product of acid catalysed dehydration: (i) 1-methyl cyclohexanol (ii) Butan-1-ol |
12 |
| 751 | Which of the following is the first oxidation product of secondary alcohol? A. Alkene B. Aldehyde c. Ketone D. carboxylic acid |
12 |
| 752 | Write the name and structure of an alcohol with four carbon atoms in its molecule. |
12 |
| 753 | ( x ) ( y_{x}^{i} ) ( y_{x}^{y} ) ( x ) |
12 |
| 754 | When phenol is treated with ( B r_{2} ) -water, the product is: A. ( sigma ) -and p-bromophenol B. 2, 3,4-tribromophenol c. 2,4,6 – tribromophenol D. none of these |
12 |
| 755 | The decreasing order of the ease of ionization under acidic conditions of above alcohols will be ( A cdot I>I I I>I I ) 3. ( I>I I>I I I ) c. ( I I>I I I>I ) ( . I I>I>I I I ) ( I ) |
12 |
| 756 | The IUPAC name for ( boldsymbol{C H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}(boldsymbol{O H}) boldsymbol{C H}=boldsymbol{C H}_{2} ) A. 2-methyl butyl alcohol B. 2-methyl butanol – 1 c. Pent-1-ene-3-ol D. 2- methyl butanol and – 2- ol |
12 |
| 757 | a) Write the mechanism of acid catalysed dehydration of ethanol to ethene. b) Between phenol and alcohol which is more acidic? Why? |
12 |
| 758 | Conversion of given reaction to the given product will take place in how many step? |
12 |
| 759 | How will you prepare iodoform in the laboratory with the help of ethyl alcohol? | 12 |
| 760 | Phenol is heated with a solution of a mixture of ( K B r ) and ( K B r O_{3} . ) The major product obtained in the above reaction is: A. 2 -bromophenol B. 3-bromophenol c. 4 -bromophenol D. 2,4,6 -tribromophenol |
12 |
| 761 | toppr Q Type your ques The cleavage of ( C-O ) bond takes place under drastic conditions with excess of hydrogen halide, ( boldsymbol{R}-boldsymbol{O}-boldsymbol{R}+ ) ( 2 H X rightarrow H X rightarrow 2 R X+H_{2} O ) If hydrogen halide is not taken in excess, then one molecule each of alcohol and alkyl halide are formed, ( boldsymbol{R}-boldsymbol{O}-boldsymbol{R}+boldsymbol{H} boldsymbol{I} stackrel{^{373} boldsymbol{H}} boldsymbol{R}-boldsymbol{O} boldsymbol{H}+boldsymbol{R}- ) I. The order of reactivity of hydrogen halides towards the above mentioned reaction depends on the bond strength of halogenated acids. Weaker is the ( boldsymbol{H}-boldsymbol{X} ) bond, greater is its reactivity. In case of unsymmetrical ethers, the site of cleavage is such that the halide is formed from the alkyl group which is tertiary, so that the halide formed is tertiary halide. Indicate whether the following statements / reactions are true or false. The order of hydrogen halide reactivity is ( boldsymbol{H} boldsymbol{I}<boldsymbol{H} boldsymbol{B r}<boldsymbol{H} boldsymbol{C l} ) A. True B. False |
12 |
| 762 | Question 1. What is the structure and IUPAC name of glycerol? | 12 |
| 763 | The formation of phenol from benzene diazonium chloride is a A. Hydrolysis reaction B. pyrolysis reaction c. Photosynthesis reaction D. combustion raection |
12 |
| 764 | Which of the following does NOT involve application of Methanol? A. As a solvent B. As an anti-freeze in pipelines c. In consumable liquor D. In Windshield washer fluid |
12 |
| 765 | (P) and (Q) respectively are: ( mathrm{Ph}-mathrm{C}_{mathrm{CH}_{3}}^{mathrm{H}}-mathrm{O}-mathrm{CH}_{3} quad stackrel{mathrm{HBr}}{longrightarrow} quad begin{array}{l}(mathrm{P}) \ text { Aiconol }end{array}+quad begin{array}{l}(mathrm{Q}) \ text { Alkynalide }end{array} ) ( A ) ( mathrm{Ph}-mathrm{C}-mathrm{OH}, mathrm{CH}_{3}-mathrm{Br} ) B. ( c ) ( mathrm{CH}_{3}-mathrm{OH}, mathrm{Ph}-underset{mathrm{Br}}{mathrm{CH}}-mathrm{CH}_{3} ) ( D ) ( mathrm{Ph}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{Br}, mathrm{CH}_{3}-mathrm{OH} ) |
12 |
| 766 | Methanol is now prepared from: A. water gas B. sugar through fermentation c. wood D. both ( A ) and ( B ) |
12 |
| 767 | of molasses takes place in the presence of enzymes. A. Fermentation B. Reduction c. Polymerization D. Oxidation |
12 |
| 768 | Among i-iii the boiling point follows the order. (i) (ii) (iii) A ( . i i<i< ) ii ( i ) B . ( i i i<i i<i ) c. ( i<i i< ) ii ( i ) D. ( i i<i i i<i ) |
12 |
| 769 | The increasing order of the rate of oxidation with ( H I O_{4} ) of the following is: ( (Pi) ) (III) ( (mathrm{IV}) ) A. ( |V<|mid<|<1 ) B. ( |<||<|||<mid V ) C. ( |V<|mid=|<1 ) D. ( mid<|=|<I V ) |
12 |
| 770 | While separating a mixture of ortho and para nitrophenols by steam distillation, name the isomer which will be steam volatile? Give reason. |
12 |
| 771 | Q Type your question [ underset{mathbf{M e} atop mathbf{P r o p e n}}^{mathbf{S}}+mathbf{P} mathrm{d} mathrm{Cl}_{2}+mathbf{H}_{2} mathbf{O} frac{mathbf{C u C l}_{2}}{mathbf{O}_{2}} underbrace{mathbf{O}}_{mathbf{M e}} |_{mathbf{M e}}+mathbf{P} mathbf{d}+mathbf{3 H C l} ] (The reaction proceeds via the addition of ( mathbf{H}^{oplus} ) and ( mathbf{O} mathbf{H} ) by Markovnikov’s rule followed by oxidation. (or) (iii) ( mathrm{BH}_{3}+mathrm{THF}+mathrm{CH}_{3} mathrm{COOH} ) OH (Wacker process) This question has multiple correct options ( mathbf{A} cdot H_{2} / P t quad M M P P quad ) Coldalk. ( K M n O_{4} quad O_{2}+ ) [ P d C l_{2}+C u C l_{2}+H_{2} O ] ( mathbf{B} cdot H_{2} / P d+B a S O_{4}+ ) quinoline( quad H C O_{3} H quad )Hotalk. ( K M n O_{4} ) ( H ) ( H g^{2+} ) ( mathbf{c} cdot sin _{2} B H+ ) ( C H_{3} C O O H quad P h C O_{3} H quad O s O_{4} / N a H S O_{3} ) [ P d C l_{2}+C u C l_{2}+H_{O} ] ( mathbf{D} cdot B H_{3}+T H F+ ) [ begin{array}{llll} C H_{3} C O O H & M C P B A & O s O_{4} / H_{2} O_{2} & i end{array} ] |
12 |
| 772 | Give reason for the higher boiling point of ethanol in comparison to methoxymethane. |
12 |
| 773 | Phenol in presence of sodium hydroxide reacts with chloroform to form salicyladehyde. The reaction is known as: A. Kolbe’s reaction B. Reimer-Tiemann reaction c. stephen reaction D. Etard reaction |
12 |
| 774 | Which of the following is used in the manufacture of ethanol? A ( cdot C_{2} H_{6} ) B. ( C_{2} H_{2} ) ( mathrm{c} cdot mathrm{CH}_{4} ) D. ( C_{2} H_{4} ) |
12 |
| 775 | The highest boiling point is for: A. ( C_{2} H_{5} O H ) в. ( C_{2} H_{5} C l ) ( mathbf{c} cdot C_{2} H_{6} ) D. ( C H_{3} O C C H_{3} ) |
12 |
| 776 | Benzylamine reacts with nitrous acid to form mainly? A. phenol B. benzyl alcohol c. benzaldehyde D. nitrosbenzene |
12 |
| 777 | Which of the following reaction is most exothermic? ( A ) B. ( c ) D. ( dot{C H}_{3}+C H_{3} C H_{2} C H_{3} rightarrow C H_{4}+C H_{3} dot{C} H C H_{3} ) |
12 |
| 778 | When ( 20 g m ) of a compound ( (A)left(M . F .=C_{4} H_{10} O_{4}right) ) reacts with excess of ( C H_{3} M g B r, 14.6 L ) of ( C H_{4} ) is obtained at STP. What is structural formula of ( (boldsymbol{A}) ) ? ( A ) B. ( c ) D. Both (a) & (b) |
12 |
| 779 | The reaction can be classified as: A. williamson ether synthesis reaction B. alcohol formation reaction C. dehydration reaction D. williamson alcohol synthesis reaction |
12 |
| 780 | 8 8 8 8 8 |
12 |
| 781 | Which reagent can be used to convert ethanol to diethyl ether? A. ( A l_{2} O_{3} ) at ( 250^{circ} C ) B. conc. ( H_{2} S O_{4} ) at ( 170^{circ} C ) c. conc. ( H_{2} S O_{4} ) at ( 130^{0}-140^{0} C ) D. ( A l_{2} O_{3} ) at ( 350^{circ} C ) |
12 |
| 782 | Write a balanced equation using the correct symbols for these chemical reactions: i) Action of hydrogen on ethene in the presence of nickel catalyst. ii) Combustion of methane evolving carbondioxide and water. iii) Dehydrogenation of ethanol. iv) Decarboxylation of Sodium salt of ethanoic acid. |
12 |
| 783 | Choose the correct statement. ( mathbf{A} cdot A ) is more volatile than ( B ) B. ( B ) is more volatile than ( A ) ( mathrm{C} . A ) is formed more rapidly at a higher temperature D. ( A ) is formed in higher yield at a low temperature |
12 |
| 784 | Total number ( 1^{circ} ) and ( 3^{circ} ) alcohols possible for ( C_{5} H_{11} O H ? ) |
12 |
| 785 | Pyrolysis of benzene sulphonic acid to form phenol is by: A. combustion B. double displacement c. addition-elimination D. both A and B |
12 |
| 786 | Which pair of products would result from the acid cleavage of phenyl propyl ether with excess concentrated ( boldsymbol{H} boldsymbol{B r} ) ? A. Phenol and 1-propanol B. Bromobenzene and 1-propanol c. Bromobenzene and 1-bromopropane D. Phenol and 1-bromopropane |
12 |
| 787 | Which of the following soluble in water? A. ( C H_{3} O H ) в. ( C H C l_{3} ) c. ( C C l_{4} ) D. ( C S_{2} ) |
12 |
| 788 | Select the best combination of reagents which will bring the above conversion. ( mathbf{A} cdot B r_{2} / F e B r_{3} ; H N O_{3} / H_{2} S O_{4} ; N a O H ; H_{2} / P t ) B . ( C H_{3} C O C l / A l C l_{3} ; B r_{2} / F e B r_{3} ; N a B H_{4} / C H_{3} O H ) c. ( C H_{3} C l / A l C l_{3} ; K M n O_{4} ; C H_{3} C l / A l C l_{3} ; N B S / h v ) ( operatorname{LiAlH}_{4} / H_{2} O ; N a O H ) D. ( C H_{3} C l / A l C l_{3} ; H N O_{3} / H_{2} S O_{4} ; N B S / h v / N a O H ) |
12 |
| 789 | Methanol is called as Marine Methanol beacuse: A. it is an essential compound for marine life B. it is mostly obtained from deep sea bed C. it is used as a marine fuel D. it serves as a signal indicator for big ships on burning |
12 |
| 790 | What is the IUPAC name of the following compound? A. 3,4-Dimethyl-1-pentene-3-01 B. Isopropyl-3-methyl vinyl carbinol c. 2,3-Dimethyl-4-pentene-3-ol D. None of the above |
12 |
| 791 | topp ом ком Q туре уочr question ( mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{CH}_{2}-mathrm{O}-mathrm{CH}_{3} ) ( mathrm{CH}_{3}-mathrm{CH}_{2}-mathrm{CH}-mathrm{O}-mathrm{CH}_{3} ) ( mathrm{CH}_{3} ) ( mathrm{CH}_{3} ) ( mathrm{CH}_{3}-mathrm{C}-mathrm{O}-mathrm{CH}_{3} ) ( mathrm{CH}_{3} ) D. ( mathrm{CH}_{3}-mathrm{CH}-mathrm{CH}_{2}-mathrm{O}-mathrm{CH}_{3} ) ( mathrm{CH}_{3} ) |
12 |
| 792 | How will you convert Acetonitrile to ethanol? |
12 |
| 793 | Balanced chemical equations for the following: Monochloro ethane is hydrolysed with aqueous KOH: A ( cdot C H_{3} C H_{2} C l+K O H rightarrow C_{2} H_{5} O H+H C l+K_{2} O ) в. ( C H_{3} C H_{2} C l+K O H rightarrow C_{2} H_{3} O H+K C l+H_{2} O ) c. ( C H_{3} C H_{2} C l+K O H rightarrow C_{2} H_{3} C l+K O H+H_{2} ) D. ( C H_{3} C H_{2} C l+K O H rightarrow C_{2} H_{5} O H+K C l+H_{2} O ) |
12 |
| 794 | Give the IUPAC name of ( boldsymbol{C l}_{2} boldsymbol{C H C H}_{2} boldsymbol{O H} ) |
12 |
| 795 | Name the method which can give following product |
12 |
| 796 | THE 202. CH,CH,CH,C=CH_BH,,THE > H,0,/0H_— ‘X’ Identify the product ‘X’: (a) CHỊCH,CH,CH,CHO (b) CH2CH2CH2CCH, (c) CHỊCH,CH,CHO (d) CH,CH,CCH,CH, Obolno |
12 |
| 797 | Draw the structure of major monohalo product in each of the following reactions. (ii) |
12 |
| 798 | Ethanol is heated with excess concentrated ( boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4} ) at ( 443 mathrm{K} ) i) Name the reaction that occurs and explain it. ii) Write the equation for the above reaction. iii) What is the product formed? What happens when this gas is passed through bromine water? iv) When ethanol vapour is passed through bromine water, why does no change occur? |
12 |
| 799 | Which of the following structural formula represents cyclohexyl alcohol? ( A ) B. ( c ) D. None of the above |
12 |
| 800 | Assertion A mixture of o- nitrophenol and ( p ) nitrophenol can be separated by steam distillation. Reason p-nitrophenol is steam volatile whereas o-nitrophenol is not steam volatile. 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 |
| 801 | Heating together of sodium ethoxide and ethyl iodide will give: A. ether B. ethyl alcohol c. acetaldehyde D. acetic acid |
12 |
| 802 | All ethers are lighter than A. benzene B. phenol c. acetone D. water |
12 |
| 803 | Convert : Chloro benzene to phenol. | 12 |
| 804 | The boiling point of ( 95 % ) ethanol is higher than that of absolute ethanol. A. True B. False |
12 |
| 805 | Assertion Paraffin wax is a white or colourless soft solid derivable from petroleum. Reason Paraffins are unsaturated hydrocarbons with straight or branched chains which contain only carbon and hydrogen. 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 |
| 806 | Why do alcohols possess higher boiling points as compared to those of corresponding alkanes? |
12 |
| 807 | Which of the following statements is not correct about methanol? A. It is used for drinking purposes. B. It is highly poisonous compound. C. It can be prepared by reduction of formaldehyde with ( L i A l H_{4} ) D. It is miscible with water in all proportions. |
12 |
| 808 | Which of the following statement is not true? A. phenol is soluble in Naol B. phenol is a weak acid C. phenol gives violet colouration with neutral ( F e C l_{3} ) D. phenol liberates ( C O_{2} ) from ( N a_{2} C O_{3} ) solution |
12 |
| 809 | The major product in the following conversion is ( A ) ( B ) ( c ) ( D ) |
12 |
| 810 | Explain: Propan-1-ol has higher boiling point than n-butane. | 12 |
| 811 | Name the reagents used in the following reaction: Dehydration of propan-2-ol to propene. |
12 |
| 812 | Phenol is acidic, because: A. it contains ( O H ) group B. it has a cyclic structure c. it conjugate base is stabilized by resonance D. all the above |
12 |
| 813 | Ether is formed when alkyl halide is treated with sodium alkoxide. This method is known as: A. Hoffmann reaction B. Williamson synthesis c. Wurtz synthesis D. Kolbe’s reaction |
12 |
| 814 | About above reaction the incorrect statement is Product A. The name of reaction is Riemer teimann’s reaction B. The intermediate in the reaction is dichloro carbene c. The final product is o-hydroxy benzaldehyde D. The final product is benzyl chloride |
12 |
| 815 | Which of the following is produced during the following reaction? ( boldsymbol{C O}(boldsymbol{g})+boldsymbol{H}_{2}(boldsymbol{g}) frac{575 boldsymbol{K}}{Z n O, C r_{2} O_{3}} ) A. Ethanol B. Ethanal c. Methanol D. Methanal |
12 |
| 816 | The following reaction is probably: ( mathbf{2} boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{C} boldsymbol{H}_{2} boldsymbol{O} boldsymbol{H} frac{boldsymbol{H}_{2} boldsymbol{S} boldsymbol{O}_{4}}{boldsymbol{H} e a t} ) ( left(boldsymbol{C} boldsymbol{H}_{3} boldsymbol{C H}_{2} boldsymbol{C H}_{2} boldsymbol{C H}_{2}right)_{2} boldsymbol{O}+boldsymbol{H}_{2} boldsymbol{O} ) A . an ( E 2 ) -type reaction involving the protonated alcohol as the substrate B. an ( S_{N} 1 ) type reaction involving the protonated alcohol as the substrate c. an ( E 1 ) type reaction involving the protonated alcohol as the substrate D. an ( S_{N} 2 ) type reaction involving the protonated alcohol as the substrate |
12 |
| 817 | Mark the correct order of decreasing acid strength of the following compounds. ( (b) ) ( (c) ) ( (d) ) ( mathrm{e} ) ( A cdot e>d>b>a>c ) ( B cdot b>d>a>c>e ) ( c cdot d>e>c>b>a ) ( D cdot e>d>c>b>a ) |
12 |
| 818 | 61. When phenol reacts with phthalic anhydride in presence of H2SO4 and heated and hot reaction mixture is poured in NaOH solution, then product formed is (a) alizarin (b) methyl orange (c) fluorescein (d) phenolphthalein. (ΔΙΛΛς) |
12 |
| 819 | Reaction of monochloro ethane is hydrolysed with aqueous KOH as follows: ( boldsymbol{C H}_{3} boldsymbol{C H}_{boldsymbol{x}} boldsymbol{C l}+boldsymbol{a q} cdot boldsymbol{K O H} rightarrow ) ( boldsymbol{C}_{2} boldsymbol{H}_{boldsymbol{y}} boldsymbol{O} boldsymbol{H}+boldsymbol{K} boldsymbol{C l} ) Find ( x ) and ( y ) A. ( x=1, y=3 ) B. ( x=1, y=5 ) c. ( x=2, y=3 ) D. ( x=2, y=5 ) |
12 |
| 820 | Williamson’s synthesis uses mechanism. ( mathbf{A} cdot S_{N} 1 ) B. ( S_{N} 2 ) C . either ( S_{N} 1 ) or ( S_{N} 2 ) D. none |
12 |
| 821 | When the vapours of alcohol are passed over copper or zinc oxide, then the following compound has no chances to be formed? A. Alkanal B. Alkyne c. Alkene D. Alkanone |
12 |
| 822 | Give the decreasing order of reactivity of the following alkyl halides in the Williamson’ s reaction. i. ( left(boldsymbol{C H}_{3}right)_{3} boldsymbol{C}-boldsymbol{C H}_{2} boldsymbol{B r} ) ii. ( boldsymbol{C l C H}_{2} boldsymbol{C H}=boldsymbol{C H}_{2} ) iii. ( boldsymbol{C l C H}_{2} boldsymbol{C H}_{2} boldsymbol{C H}_{3} ) ¡v. ( B r C H_{2} C H_{2} C H_{3} ) ( A ). ii ( > ) iv ( > ) iii ( >i ) B. i>iii>iv>ii c. ii > ii >iv > i D. i > iv > iii > i |
12 |
| 823 | The reactivities of methanol (I), ( 1- ) propanol (II), 2 – butanol (III) and 2 methyl-2- propanol (IV) towards sodium metal follow the order: ( A cdot|>||>|||>mid V ) B. IV>|||> || > | c. ।>IV> || > || D. IV > || > || > | |
12 |
| 824 | Assertion Solubility on n-alcohols in water decreases with increase in molecular weight. Reason The relative proportion of the hydrocarbon part in alcohols increases with increasing molecular weight which permits enhanced hydrogen bond with water. 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 |
12 |
| 825 | Q Type your question ( A ) B. ( c ) ( D ) |
12 |
| 826 | Which are the sources of phenol? This question has multiple correct options A. Cumene B. Hydrolysis C. Middle oil of coal tar distillation D. Reaction of diazonium salt with ( H_{3} P O_{2} ) |
12 |
| 827 | Write the mechanism involved in the esterification of a carboxylic acid with alcohol |
12 |
| 828 | The ether when treated with ( H I ) produces: A. alcohol + alkyl iodide B. alkyl iodide only c. alcohol only D. one hydrogen in ether is substituted by iodide |
12 |
| 829 | 2.2 ( g ) of an alcohol (A) when treated with ( boldsymbol{C H}_{3}- ) Mgl liberates ( 560 mathrm{mL} ) of ( boldsymbol{C H}_{4} ) at STP. Alcohol (A) on dehydration followed by ozonolysis gives ketone (B) along with (C). Oxime of ketone (B) contains ( 19.17 % ) N. (A) on oxidation gives ketone (D) having the same number of the carbon atom. The molecular mass of (A) is? A . 74 B. 88 ( c cdot 60 ) D. 102 |
12 |
| 830 | Give the IUPAC name for the following alcohols. Classify as primary or secondary or teritiary alcohol ( left(boldsymbol{C H}_{3}right)_{3} boldsymbol{C}-underset{boldsymbol{o} boldsymbol{H}}{boldsymbol{C}} boldsymbol{H}-boldsymbol{C}_{2} boldsymbol{H}_{5} ) | 12 |
| 831 | The IUPAC name of the following compound is 2,4,6 – tribromophenol. A. True B. False |
12 |
| 832 | In the following reaction ( boldsymbol{C}_{2} boldsymbol{H}_{5} boldsymbol{O} boldsymbol{C}_{2} boldsymbol{H}_{5}+boldsymbol{4} boldsymbol{H} stackrel{boldsymbol{R e d} boldsymbol{P}+boldsymbol{H I}}{longrightarrow} boldsymbol{2} boldsymbol{X}+ ) ( boldsymbol{H}_{2} boldsymbol{O}, boldsymbol{X} ) is: A. ethane B. ethylene c. butane D. propane |
12 |
| 833 | Which is the best synthesis of the ether (A) shown in the figure? |
12 |
| 834 | Which of the following compounds has lowest boiling point? A. n-butyl alcohol B. Isobutyl alcohol c. Tert-butyl alcohol D. Sec-butyl alcohol |
12 |
| 835 | 33. Alcohol prepared by the distilla tion of wood is : (1) Propyl alcohol (2) Methyl alcohol (3) Ethyl alcohol (4) Glycerol |
12 |
| 836 | What compounds are used in reaction of ester preparation? A. An organic acid and an aldehyde B. An alcohol and an aldehyde c. An acid and a ketone D. Two alcohols E. An alcohol and an organic acid |
12 |
| 837 | In which of the following substances, ethanol is not used? A. Tonics B. cough mixture c. candle D. Alcohol |
12 |
| 838 | Cumene process is the most important commercial method for the manufacture of phenol. Cumene is: A. (1-methylethyl ) benzene B. ethyl benzene c. vinyl benzene D. propyl benzene |
12 |
| 839 | Benzene ( stackrel{X}{longrightarrow} ) Benzene sulphonicacid Identify ( X ? ) A. Sulphuric acid B. Hydrochloric acid c. Sulphur D. Both A and C |
12 |
| 840 | Action of hydrogen iodide on anisole gives: A. phenol and iodomethane B. iodobenzene and methanol c. phenol and methanol D. iodobenzene and iodomethane |
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| 841 | Among the following which has the highest boiling point? A ( cdot C H_{3} C H_{2} ) OH в. ( C H_{3} C H_{2} C H_{3} ) ( mathbf{c} cdot C H_{2}=C H C H_{3} ) D. ( C H_{3} O C H_{3} ) |
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| 842 | The correct order of boiling point of 1,2,3 alcohol is: ( mathbf{A} cdot 1>2>3 ) В. ( 3>2>1 ) c. ( 2>1>3 ) D ( .2>3>1 ) |
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| 843 | With ethoxyethane which compound is miscible to almost the same extent? A. Formaldehyde B. Bhutanone c. Butan-1-ol D. Propan-1-ol |
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| 844 | Arrange the following compounds in the increasing order of their acid strength: p-cresol, p-nitrophenol, phenol |
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| 845 | An alcohol with ( D . U=1 ) exists having a ( 2^{circ} ) hydroxy group with the molecular formula of ( C_{3} H_{6} O ) is: A. isopropanol B. propenol c. cyclopropenol D. cyclopropanol |
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| 846 | IUPAC name of the given compound is: [ begin{array}{c} mathrm{H}_{3} mathrm{C}-mathrm{CH}-mathrm{CH}_{2}-mathrm{CH}-mathrm{CH}-mathrm{CH}_{2}-mathrm{CH}_{3} \ mathrm{OH} end{array} ] A. 5 -ethylheptane-2.4-diol B. 3-ethylheptane-4,6-diol C . 4-ethyl-1-methylhexane-1,3-diol D. none of these |
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| 847 | Williamson synthesis is a method of preparation of A. symmetrical ethers B. unsymmetrical ethers c. diaryl ethers D. both A and B |
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| 848 | Question 7. When phenol is treated with bromine water, white precipitate is obtained. Give the structure and the name of the compound formed. |
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| 849 | ( boldsymbol{C H}_{3}-boldsymbol{O H} stackrel{boldsymbol{P}+boldsymbol{I}_{2}}{longrightarrow} boldsymbol{A} frac{boldsymbol{H} text {eating}}{operatorname{alc} K C boldsymbol{N}} ) ( boldsymbol{B} frac{boldsymbol{L i} A boldsymbol{l} boldsymbol{H}_{4}}{boldsymbol{N a} / text {alcohol}} boldsymbol{C} frac{boldsymbol{H} boldsymbol{N} boldsymbol{O}_{2}}{boldsymbol{N a N O _ { 2 }}+boldsymbol{d i l} boldsymbol{H C l}} boldsymbol{D} ) What is ( D ? ) A. ( C H_{3} C H O ) в. ( C H_{3} )СООН c. ( C H_{3} C H_{2} ) ОН D. ( C H_{3}-O-C H_{3} ) |
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| 850 | ( boldsymbol{R}-boldsymbol{O H} stackrel{boldsymbol{P B r}_{3}}{boldsymbol{A}} ) ( boldsymbol{B} frac{text {Grignard reaction}}{boldsymbol{C H}_{2}-boldsymbol{C H}_{2}-boldsymbol{O}} boldsymbol{C} stackrel{boldsymbol{H}^{+} / boldsymbol{H}_{2} boldsymbol{O}}{boldsymbol{N}} boldsymbol{D} ) What are ( A, B, C ) and ( D ) are respectively? ( mathbf{A} cdot R-B r, R-M g-B r, R-C H_{2}-O-M g-B r, R- ) ( C H_{2} C H_{2}-O H ) B . ( R-B r, R-M g-B r, R-C H_{2}-O-C H_{2}-M g- ) ( B r, R-C H_{2} C H_{2}-O H ) c. ( R-B r, R-M g-B r, R-C H_{2}-C H_{2}-O-M g- ) ( B r, R-C H_{2} C H_{2}-O H ) D. ( R-B r, R-M g-B r, R-C H_{2}-C H_{2}-O-M g- ) ( B r, R-C H_{2} O H ) |
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| 851 | Give equations of the following reactions: (i) Oxidation of propan-1-ol with alkaline ( boldsymbol{K} boldsymbol{M} boldsymbol{n} boldsymbol{O}_{4} ) solution (ii) Bromine in ( C S_{2} ) with phenol. (iii) Dilute ( boldsymbol{H} boldsymbol{N} boldsymbol{O}_{3} ) with phenol (iv) Treating phenol wih chloroform in presence of aqueous ( N a O H ) |
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| 852 | Which of the following is a primary alcohol? A. Butan- 2 – – ० B. 2 – Methylpropan-1- ol c. 2 – Methylpropan – 2- ol D. None of the above |
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| 853 | Question 17. Give equation of the following reactions. (i) Oxidation of propan-l-ol with alkaline KMnO, solution. (ii) Bromine in CS, with phenol. (iii) Dilute HNO, with phenol. (iv) Treating phenol with chloroform in presence of aqueous NaOH. (1) Alcohol oxidises to carboxylic acid. (ii) o-and p-bromophenol are formed. fiil) Nitration (introduction of NO, group) at o- and p- positions. (v) Reimer-Tiemann reaction involves introduction of -CHO group at ortho position, salicylaldehyde is formed. T 10LT |
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| 854 | Which of the following reactions is possible? A. ( M e_{3} C-O N a+M e_{3} C-B r rightarrow M e_{3} C-O-C M e_{3} ) в. ( M e_{2} C H-O N a+M e_{2}+M e_{2} C H M e_{2} C H B r rightarrow ) ( M e_{2} C H-O-C H M e_{2} ) c. ( P h O N a+P h B r rightarrow P h O P h ) D. ( P h O N a+C H_{3} B r rightarrow P h O C H_{3} ) |
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| 855 | Which of the following has lowest boiling point? A. ( p ) -nitrophenol B. ( m ) -nitrophenol c. ( o ) -nitropheno D. phenol |
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| 856 | Reagents used for industrial preparation of methanol are: A. ( C O+H_{2} ) в. ( H C H O+H_{2} ) c. ( C O_{2}+H_{2} ) D. ( H C O O H+H_{2} ) |
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| 857 | IUPAC name is 2-propoxycyclohexane. Is the above statement correct? A. True B. False |
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