Waste Water Story Questions

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Waste Water Story Questions

List of waste water story Questions

Question NoQuestionsClass
1Match the following items in column I with column II and choose the correct
answer.

Column I
A. Arsenic
1. Minamata
disease
B. Nitrate
2. Itai-itai
C. Mercury
3. Blue-baby syndrome
D. Cadmium
4. Skeletal
fluorosis
E. Fluoride
5. Black-foot
disease
A ( cdot A-2, B-3, C-5, D-1, E-4 )
B. A- 5, B- – 3, С-1, D- 2, E- 4
c. ( A-3, B-4, C-5, D-1, B-2 )
D. A- 5, B- 4, C- 3, D-2, B-1
E. A- 2, B- 5, C- 4, D- 3, E-1

7
2is a water-carried waste, in
solution or suspension, that is intended
to be removed from a community.
A. Pollutant
B. Sewage
c. Aerosol
D. None of the above
7
3Disease caused due to poor sanitation
is
A. cancer
B. Typhoid.
c. Polio
D. Both B and C
7
4Assertion
Integrated pest management programme involves harmonious
application of various ‘cuture controls’
to insure minimum environmental
pollution and proper maintenance of ecological balance.
Reason
Integrated pest management programme is an important step taken by Government of India.
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
7
5The waste from toilets can be used for
making
A. Vermicompost
B. Chemical fertilizers
c. Biogas
D. All of these
7
6Blue-baby syndrome is caused by
A. Cadmium pollution
B. Mercury poisoning
C. Chronic exposure to arsenic
D. Excess nitrate in drinking water
E. Excess fluoride in drinking water
7
7Composting is carried out from
A. Sewage sludge
B. Rubbish
C . Garbage and sewage sludge
D. Industrial wastes
7
8In water treatment plants, the gas used
A. Ozone
B. Carbon dioxide
c. Nitrogen
D. oxygen
7
9Explain the Junction of bar screens in a wastewater treatment plant.7
10Select the correct statement from the
following.
A. Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
B. Biogas is produced by the activity of aerobic bacteria on animal waste
C. Methano bacterium is an aerobic bacterium found in
rumen of cattle
D. Biogas, commonly called as global gas, is pure methane
7
11Q Type your question
them are correct
(i) In Primary treatment First, floating debris of waste is removed by sequence filters
(ii) The Soil and small pebbles are
removed by sedimentation in settling
tanks
(iii)The sediment is called primary sludge and supernatant is effluent.
(iv) The Sludge is taken for Secondary
treatment.
(v) Lower the B.O.D., higher Is water
pollution. (vi)When DDT enters the food chain
then they reach water and are easily degradable. (vii)Discharge of sewage water into river water will decrease its B.O.D.
(viii) Chlorine is added to disinfect
drinking water
A ( . ) (i), (ii), (iii), (iv)
B. (i), (ii), (iii), (vii)
( mathbf{c} cdot(mathbf{i}),(mathbf{i} i)(mathbf{i v}),(mathbf{v}) )
D. (i), (iv),(v), (viii)
7
12Which of the following is the method of controlled aerobic combustion of
wastes inside chambers at
temperatures as high as ( 900^{0}-1300^{0} mathrm{C} ? )
A. Sludge burning
B. Pyrolysis
c. Incineration
D. Source reduction
7
13Sewage water is purified for recycling by the action of
A. Light
B. Micro-organisms
c. Aquatic plants
D. Fishes
7
14City garbage can be used to produce
A. sewage sludge
B. useful articles
c. biogas and maure
D. All the above.
7
15Pyrolysis of wood occurs in
A. Presence of air
B. Absence of air
C . limited supply of air
D. Both B and C
7
16Burying of waste for their disposal is
seen in case of
A. Landfill
B. Incinerations
c. Dumps
D. None of the above
7
17Secondary sewage treatment is mainly
( mathbf{a} )
A. Biological process
B. Physical process
c. Mechanical process
D. Chemical process
7
18Explain sewage treatment7
19Explain the process of secondary treatment given to the primary effluent up to the point it shows significant change in the level of biological oxygen demand (BOD) in it.7
20In the waste water treatment plant (WWTP), air is pumped into water to
A. Support the growth of anaerobic bacteria
B. Support the growth of aerobic bacteria
c. Disinfect water
D. Throw human waste
7
21Study the following statements and select the incorrect ones.
(i) Physical removal of large and small particles through filtration and sedimentation is called primary sewage
treatment.
(ii) Secondary sewage treatment is mainly a mechanical process.
(iii) Activated sludge sediment in a sewage treatment plant is a rich source of aerobic bacteria.
(iv) Biogas, commonly called as gobar
gas, is pure methane.
A . A-(iii), B-(i), C-(iv), D-(ii)
B. A-(i), B-(iii), C-(iv), D-(ii)
c. A-(iii), B-(ii), C-(iv), D-(i)
D. A-(iii), B-(i), C-(ii), D-(iv)
7
22Use of ( _{–}-_{-}-_{-}- ) helps in water purification.
A. Sodium
B. Alum
c. chlorine
D. Both B and C
7
23Heavy metals like Ni can be separated
from water by
A. Carbomethyl enitosan
B. Biological treatment
c. Ultrafiltration
D. Sedimentation
7
24Find the odd one out:
A. Electrodialysis
B. Ion exchange chromatography
C. Reverse osmosis
D. Electrostatic precipitator
7
25Pyrolysis is a
A. Biochemical process
B. Biological process
C. Thermochemical process
D. Petrochemical process
7
26Pyrolysis of wood yields
A. Alcohol
B. Charcoal
C. Charcoal and wood gas
D. Charcoal, wood gas, tar and oil
7
27A priest of temple collected dried garlands. holy old books and some statues. He asked his son to throw in
the river. But instead of throwing. he buried them in the soil.
a. In the situation above who wins your
support: the priest or the sonJustify your answer by giving two reasons.
b. What are the values reflected in the
behaviour of son?
7
28Pollution due to sewage can be reduced by
A. Creating separate chemical toilets.
B. Constructing septic tanks.
c. Letting off drainage in rivers.
D. Both A and B
7
290
primary sludge and activated sludge
and select the incorrect ones.
( begin{array}{lll} & text { Primary Sludge } & text { Activated sludge } \ text { (i) } & begin{array}{l}text { It is sludge } \ text { formed during } \ text { primary sewage } \ text { treatment. }end{array} & begin{array}{l}text { It is sludge formed } \ text { during secondary } \ text { sewage treatment. }end{array} \ text { (ii) } & begin{array}{l}text { It possesses flocs } \ text { of decomposer } \ text { microbes. }end{array} & begin{array}{l}text { It does not possess } \ text { flocs of }end{array} \ text { (iii) } & begin{array}{l}text { decomposer } \ text { microbes. }end{array} \ text { (iv) } & begin{array}{l}text { It does not } \ text { require aeration. }end{array} & begin{array}{l}text { Formation of } \ text { activated sludge } \ text { requires aeration. }end{array} \ begin{array}{l}text { A lotof } \ text { decomposition } \ text { occurs during } \ text { formation of } \ text { primary sludge. }end{array} & begin{array}{l}text { Very little } \ text { decomposition } \ text { occurs during } \ text { formation of } \ text { activated sludge. }end{array}end{array} )
A. (i) and (ii)
B. (ii) and (iv)
( y(i v) )
c. only
D. (ii) and (iii)
7
30Which of the diseases is caused due to
mercury poisoning?
A. Minamata disease
B. Malaria
c. Hepatits
D. Kwashiorkar
7
31Which of the following could be a substance found in waste water that
floats on the top and is removed in the
Primary Treatment of water?
A. Oil and grease
B. Human faeces
c. Hair
D. Plastic
7
32Wastewater released by houses is
called
7
33Measurement of the rate of oxygen utilization by a unit volume of water over a period of time is to measure
A. Biochemical oxygen demand
B. Biosynthetic pathway
c. Biogas generation
D. Fermentation
7
34Phosphate pollution is brought about by
A. Phosphate rocks
B. Automobile exhausts
c. sewage and phosphate rocks
D. Sewage and agricultural fertilisers
7
35Activated sludge acts as inoculum in:
A. Primary treatment
B. Secondary treatment
c. Tertiary treatment
D. More that one option
7
36Vermi-processing toilet is beneficial
because
A. It reduces the diseases.
B. It increases soil fertility.
c. Both A and B.
D. It reduces electricity.
7
37Cooking oil should not be thrown down
the drain because
A. They do not allow free flow of oxygen
B. They do not allow bacteria to decompose waste.
c. They block the drainage pipes.
D. None of the above
7
38Which is the most common source of
eutrophication?
A. Industrial effluent
B. Textile effluent
c. Sewage water
D. Both B and C
7
39A sewage treatment process in which a portion of the decomposer bacteria present in the waste recycled into the beginning of the process is called as
A. Activated sludge treatment
B. Primary treatment
c. Tertiary treatment
D. cyclic treatment
7
40Study the following statements about
ozone:
(a) It is essential for the breathing of living organisms.
(b) It is used to disinfect water.
(c) It absorbs ultraviolet rays.
(d) Its proportion of air is about ( 3 % ) Which of these statements are correct?
( A cdot(a),(b) ) and ( (c) )
B. (b) and (c)
c. (a) and (d)
D. All four
7
41Permutit is the trade name of a mixture
of?
A. Hydrated silicates of Ca and Mg
B. Hydrated silicates of Al and Na
c. Hydrated aluminates of Ca and No
D. None of these
7
42Aeration process change the odour of wastewater
A . True
B. False
7
43Vermi-processing toilet is
A. Alternative sources of energy.
B. Alternative arrangement of sewage disposal.
C. Alternative arrangement of sewage treatment.
D. None of the above.
7
44Which of the following is referred to as the world’s most problematic aquatic weed?
A. Abelmoschus esculentus
B. Eichhornia crassipes
c. Parthenium hysterophorus
D. Planktonic algae
7
45Select the correct statement regarding
activated sludge formed during
secondary sewage treatment.
A. A small part of it is rapidly pumped back from sedimentation to aeration tank.
B. It absorbs pathogenic bacteria present in waste water while sinking to the bottom of the settling tank.
C. A major part of it Is anaerobically digested.
D. Both
(a) and (c)
7
46The human excreta can be used for the
production of
A. Vermi cakes for fertilizer
B. Vermi cakes as manure
c. vermi cakes as animal food
D. Both A and B
7
47Which of the following is associated with the vermi-processing toilets?
A. Low water use toilet
B. Electronic toilet
c. Kid’s toilet
D. None of the above
7
48What gases are produced in anaerobic sludge digesters?
A. Methane and ( C O_{2} )
B. Methane, Hydrogen Sulphide and ( C O_{2} )
C. Methane, Hydrogen Sulphide and ( O_{2} )
D. Hydrogen Sulphide and ( C O_{2} )
7
49Which of the following are correctly matched ?
1. Arsenic poisoning – Black-foot disease
2. Secondary effluent treatment Biological process
3. Pyrolysis – Waste disposal
4. Tubifex – Water pollution indicator
5. Biomagnification – Degradable
pollutants
A. 1,2,3 and 5
B. 1,3,4 and 5
c. 2,3,4 and 5
D. 1,2,4 and 5
E. 1,2,3 and 4
7
50Which of the following could be used in purification of sewage?
A. Fungi
B. Mycoplasma
c. Unicellular green algae
D. All plants
7
51What are the various constituents of
domestic sewage? Discuss the effect of sewage discharge in a river.
7
52Rag pickers remove reusable or recyclable articles.
A . True
B. False
c. Either
D. Neither
7
53Enzymatic filters are used for removing
A. Nitrogen pollutants
B. Chloride pollutants
c. Hydrocarbons
D. Lead
7
54Pollution from animal excreta and
organic waste from kitchen can be most profitably minimised by
A. Storing them in underground storage tanks
B. Using them for producing biogas
c. vermiculture
D. using them directly as biofertilizers
7
55Black-foot disease is caused due to
ground water contaminated with
excess of
A. Nitrate
B. Fluoride
c. Arsenic
D. sulphur
E. Mercury
7
56Explain the different steps involved during primary treatment phase of
sewage.
7
57During the primary treatment of sewage, solid particles that settle down are called
( A ). Flocs
B. Primary sludge
c. Activated sludge
D. Anaerobic sludge
7
58Distinguish between roles of flocs and anaerobic sludge digesters in sewage treatments.7
59Which of the following plant is used for the purification of water?
A. Biggiata
B. Chlorella
c. spirogyra
D. Eichhornia
7
60How did a citizen group called Friends of Arcata Marsh, Arcata, California, USA, help to improve water quality of the marshland using Integrated Waste Water Treatment? Explain in four steps.7
61Disease/disorder caused due to lead
poisoning is
A. Typhoid
B. Tetanus
c. Malaria
D. Anemia
7
62Biological control during sewage treatment is observed in
A. Aerating tanks
B. Settling tanks
c. Anaerobic sludge digesters
D. Primary treatment
7
63One of the method for purification of water is sedimentation.
A. True
B. False
7
64Primary treatment of sewage is also known as
A. Physical treatment
B. Chemical treatment
c. Biological treatment
D. All of the above
7
65Pollution can be controlled by:
A. Sewage treatment
B. Manufacturing electrically operated vehicles
C. By checking atomic blasts
D. All of the above
7
66Recycling biodegradable waste into a
nutrient-rich, usable material is often
called as
7
67Identify the low-cost onsite sewage disposal system.
A. Septic tank
B. Composting pits
c. chemical toilets
D. All of the above
7
68Explain the relationship between sanitation and disease7
69Name the two different categories of microbes naturally occurring in sewage water. Explain their role in cleaning sewage water into usable water7
70is the most dangerous soil
contaminant.
A. Organic waste
B. Radioactive waste
c. chemical fertilizer
D. Both A and B
7
71The domestic sewage in large cities
A. Has a high BOD as it contains both aerobic and bacteria
B. Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)
C. When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen
D. Has very high amounts of suspended solids and dissolved salts
7
72Sewage purification is performed by
A. Microbes
B. Fertilisers
C. Antibiotics
D. Antiseptics
7
73Sanitation at public places can be maintained by
A. Proper drainage.
B. Garbage management.
c. Sufficient public toilet facilities.
D. All of the above.
7
74Which is correctly matched?
1. Arsenic poisoning- Black foot disease
2. Secondary Effluent treatment-
Biological process
3. Pyrolysis- Solid soil waste disposal
4. Tubifex- Water pollution indicator
5. Biomagnification – Degradable pollutants
A .1,2,3,5
в. 1,3,4,5
c. 2,3,4,5
D. 1,2,3,4
E .1,2,4,5
7
75The domestic sewage in large cities
A. Is processed by aerobic and then anaerobic bacteria in the secondary treatment in sewage treatment plant ( (mathrm{STPs}) )
B. When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen.
C. Has very high amounts of suspended solids and dissolved salts.
D. Has a high BOD as it contains both aerobic and anaerobic bacteria.
E. Is processed by anaerobic bacteria in the primary treatment and by aerobic bacteria in the secondary treatment in sewage treatment plant (STPs)
7
76In the treatment of waste water
discharge, which treatment stage involves biological treatment?
A. Primary treatment
B. Secondary treatment
c. Tertiary treatment
D. Reverse osmosis stage
7
77A disease can spread from one person
to population by
A. Improper sanitation in public places.
B. Improper sanitation in home
c. sharing of food.
D. Sharing of water bottle
7
78When domestic sewage mixes with
river water
A. Small animals like rats will die after drinking river water
B. The increased microbial. activity releases micronutrients such as iron
C. The increased microbial activity uses up dissolved oxygen
D. The river water is still suitable for drinking as impurities are only about ( 0.1 % )
7
79What is primary treatment of sewage?7
80Which of the following groups contains only easily biodegradable items? This question has multiple correct options
A. Grass, flower and leather
B. Grass, wood and plastic
c. Fruits, peel cake and lime juice
D. Cake, wood and grass
7
81A sewage treatment process in which a portion of the decomposer bacteria present in the waste is recycled in the beginning of the process is called
A. Cyclic treatment
B. Primary treatment
c. Activated sludge treatment
D. Tertiary treatment
7
82Polluted water can be purified by using
A. Microorganisms
B. Algae
c. Pesticides
D. Fishes
7
83Select the correct statement from the
following.
A. Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
B. Biogas is produced by the activity of aerobic bacteria on animal waste.
C. Methanobacterium is an aerobic bacterium found in
rumen of cattle.
D. Biogas, commonly called as gobar gas, is pure methane.
7
84Explain the steps involved in the
sewage treatment.
7
85Safai karamcharis collect the garbage in trucks and take it to a low lying open area. This area is called as
A. Dust bin
B. Garbage
c. Landfill
D. waste
7
86A lake with an inflow of domestic
sewage rich in organic waste may result in
A. Drying of the lake vary soon due to algal bloom
B. An increased growth of fishes due to lot of nutrients
c. Death of fish due to lack of oxygen
D. Increased population of aquatic food web organisms
7
87Observe the bins and waste material
heaps and suggest what materials can be used for preparing handicrafts materials.
7
88Waste water is rich in
A. Microbes
B. Lather
c. Plastics
D. All of the above
7
89The worm used in vermi-processing
toilet is
A. Redworm.
B. Roundworm.
c. Flatworm.
D. None of the above
7
90is toxic substance getting mixed with ground water.
A. Endosulfan
B. Sodium bicarbonate
c. Hydrogen sulphide
D. None of the above
7
91What is sludge? Explain how it is
treated.
7

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