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question_answer1)
Bhopal gas accident occurred in which year and due to which gas?
A)
1986/Methyl isocynate done
clear
B)
1984/Methyl isocynate done
clear
C)
1985/CO done
clear
D)
1985/Ethyl isocynate done
clear
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question_answer2)
Photochemical smog does not include:
A)
PAN done
clear
B)
\[N{{O}_{x}}\] done
clear
C)
CO done
clear
D)
\[{{O}_{3}}\] done
clear
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question_answer3)
DDT causes egg shell thinning in birds because it inhibits:
A)
calmodulin done
clear
B)
calcium ATPase done
clear
C)
magnesium ATPase done
clear
D)
carbonic anhydrase done
clear
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question_answer4)
The accompanying graph follows the progress of an algal bloom and two associated environmental factors over the course of a year in the North Atlantic Ocean.
Which line in the table given the correct identity of W, X and Y?
A)
B)
C)
D)
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question_answer5)
Ozone layer in stratosphere is effected by:
A)
Excess \[C{{O}_{2}}\] done
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B)
Excess CO done
clear
C)
Chloro-fluoro-carbon done
clear
D)
Low rainfall done
clear
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question_answer6)
Why is the concentration of ozone less over the north and south poles?
A)
CFCs accumulate only in area where the air is cold done
clear
B)
CFC use is highest in these areas done
clear
C)
CFCs stick to frozen water vapour and are able to act catalysts done
clear
D)
UV rays are stronger in the atmosphere done
clear
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question_answer7)
The percentage of air pollution caused due to smoke is:
A)
10-15% done
clear
B)
15-20% done
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C)
20-25% done
clear
D)
2-5% done
clear
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question_answer8)
Increase in productivity most likely cause loss of species because:
A)
those species that increase in productivity outcompete other species. done
clear
B)
the causes of increased productivity in one species do not necessarily have the same effect in all species. done
clear
C)
there are inadequate resources available for productivity increases in all species. done
clear
D)
All of the above done
clear
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question_answer9)
The maximum biological magnification of DDT through food web is seen in:
A)
Algae done
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B)
Bacteria done
clear
C)
Higher plants done
clear
D)
Man done
clear
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question_answer10)
In "case \[C{{O}_{2}}\] of earth's atmosphere disappears, the temperature of earth's surface would:
A)
Increase done
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B)
Decrease done
clear
C)
Depend on oxygen concentration done
clear
D)
Remain the same done
clear
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question_answer11)
The below diagram shows electrostatic precipitator. Identify 1, 2 and 3.
A)
1 - Discharge corona, 2 - Negatively charged wire, 3 - Collection plate grounded done
clear
B)
1 - Discharge corona, 2 - Positively charged wire, 3 - Collection plate grounded done
clear
C)
1 - Discharge corona, 2 - Negatively charged wire, 3 - Collection plate burnt done
clear
D)
1 - Uncharge corona, 2 - Positively charged wire, 3 - Collection plate never grounded done
clear
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question_answer12)
The diagram below shows the effect of polluting a river with untreated whey. What does graph X represent?
A)
Bacterial count done
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B)
Number of fish done
clear
C)
Mass of curds done
clear
D)
Concentration of rennet done
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question_answer13)
Pollution of \[S{{O}_{2}}\] destroys:
A)
Fungi done
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B)
Lichen done
clear
C)
Algae done
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D)
Fishes done
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question_answer14)
Which organisms in a food chain consisting of algae, copepods (small crustaceans), small fish, large fish, and ospreys (fish-eating birds of prey) would have the highest concentrations of DDT in their tissues?
A)
Algae done
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B)
Copepods done
clear
C)
Small fish done
clear
D)
Ospreys done
clear
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question_answer15)
Major aerosol pollutant in jet emission is:
A)
Sulphur dioxide done
clear
B)
Carbon monoxide done
clear
C)
Methane done
clear
D)
Fluorocarbon done
clear
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question_answer16)
Pollution indicator plants:
A)
are resistant to pollution done
clear
B)
can purify the atmosphere done
clear
C)
are very sensitive to pollutants done
clear
D)
can indicate onset of rains done
clear
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question_answer17)
Noise pollution is created if noise is in excess to:
A)
70-75 dB done
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B)
50-60 dB done
clear
C)
80-99 dB done
clear
D)
40-65 dB done
clear
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question_answer18)
Match column-I with column-II and select the correct option.
| Column-I | | Column-II |
A. | Environment (Protection) Act | I. | 1987 |
B. | Air (Prevention and Control of Pollution) Act | II. | 1986 |
C. | Water (Prevention and control of Pollution) Act | III. | 1980 |
D. | Concept of Joint Forest Management of Govt. of India | IV. | 1974 |
A)
A-IV; B-III; C-II; D-I done
clear
B)
A-II; B-I; C-IV; D-III done
clear
C)
A-I; B-II; C-III; D-IV done
clear
D)
A-I; B-III; C-II; D-IV done
clear
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question_answer19)
Maintenance of forests in areas with increasing carbon dioxide levels is critical because:
A)
forests can serve as carbon dioxide sinks by increasing photosynthesis. done
clear
B)
the use of carbon dioxide by trees reduces carbon dioxide in the atmosphere. done
clear
C)
forests are needed to reduce global warming. done
clear
D)
All of the above done
clear
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question_answer20)
Effect of pollution is first marked on:
A)
Micro-organisms done
clear
B)
Green vegetation of an area done
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C)
Food crop done
clear
D)
Mammals done
clear
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question_answer21)
The Montreal Protocol refers to:
A)
persistent organic pollutants done
clear
B)
global warming and climate change done
clear
C)
substances that deplete the ozone layer done
clear
D)
biosafety of genetically modified organisms done
clear
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question_answer22)
Which of the following phenomenon is represented by the given figure?
A)
Green-house effect done
clear
B)
El Nino effect done
clear
C)
Ozone hole done
clear
D)
Eutrophication done
clear
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question_answer23)
Which is a non-degradable pollutant?
A)
Smoke done
clear
B)
Polythene done
clear
C)
Copper scraps done
clear
D)
Iron scraps done
clear
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question_answer24)
Which of the following is not used for disinfection of drinking water?
A)
Chlorine done
clear
B)
Ozone done
clear
C)
Chloramine done
clear
D)
Phenyl done
clear
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question_answer25)
Which of the following is not a major contributor to the current global increase in methane level?
A)
Activity of aerobic bacteria in rice paddies. done
clear
B)
Burning of tropical biomass. done
clear
C)
Flatulence of herbivorous ruminants. done
clear
D)
Decomposition of waste in landfill dumps. done
clear
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question_answer26)
Which of the following statement (s) is/are correct about noise pollution?
A)
It is an undesired high level of sound. done
clear
B)
It is measured in dB. done
clear
C)
It can cause damage to heart, increase blood cholesterol and even raise blood pressure etc. done
clear
D)
All of the above done
clear
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question_answer27)
'EcoSan' toilets, being used in Kerala and Srilanka are hygienic and cost effective solution to human waste disposal. Mark the correct statement regarding EcoSan.
A)
Recycled human waste from this can be used as a natural fertilizer. done
clear
B)
They are called composting toilets. done
clear
C)
They do not depend on water for the disposal of excreta. done
clear
D)
All of the above done
clear
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question_answer28)
Identify correct statement and choose the option.
A)
The major contribution in greenhouse gases is of\[C{{H}_{4}}\]. done
clear
B)
Global warming is because of ozone depletion. done
clear
C)
When organic waste enters into a water body its BOD increases. done
clear
D)
All of the above done
clear
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question_answer29)
Consider the following statements. Choose the correct option.
(i) By the end of twentieth century, the forest cover in India was reduced to 19.4 percent. |
(ii) National Forest Policy was implemented in the year 1988. |
(iii) The average annual production of dry grass or hay in India is about 250 million tons. |
(iv) About 10% of the world's population lives in arid or semi arid regions. |
A)
(i) and (ii) are true done
clear
B)
(i), (iii) and (iv) are false done
clear
C)
(i), (ii), and (iii) are true done
clear
D)
(iii) is false done
clear
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question_answer30)
Frequent occurrence of water blooms in a lakeindicates:
A)
Nutrient deficiency. done
clear
B)
Oxygen deficiency. done
clear
C)
Excessive nutrient availability. done
clear
D)
Absence of herbivores in the lake. done
clear
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question_answer31)
In cities like Mumbai and Kolkata the major air pollutants are:
A)
Ozone done
clear
B)
CO and oxides of sulphur done
clear
C)
Hydrocarbons and hot air done
clear
D)
Algal spores and marsh gas done
clear
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question_answer32)
Thermal pollution of water bodies is due to:
A)
Discharge of heat (hot water) from power plants. done
clear
B)
Discharge of chemicals from industries. done
clear
C)
Discharge of waste from mining. done
clear
D)
Discharge of agricultural runoff. done
clear
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question_answer33)
Gaseous pollutants can be controlled by:
A)
Arresters done
clear
B)
Electrostatic precipitators done
clear
C)
Pyrolysis done
clear
D)
Adsorption done
clear
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question_answer34)
Which pollutant is absent in automobile exhausts?
A)
\[S{{O}_{2}}\] done
clear
B)
Fly ash done
clear
C)
Hydrocarbon gases done
clear
D)
Nitrogen oxides done
clear
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question_answer35)
It is said, the Taj Mahal may be destroyed due to:
A)
food in Yamuna river. done
clear
B)
decomposition of marble as a result of high temperature. done
clear
C)
air pollutants released from oil refinery of Mathura. done
clear
D)
All of the above done
clear
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question_answer36)
Mark the statement that describes the eco- friendly disposal of municipal solid- waste.
A)
It should be burnt to completion. . done
clear
B)
It should be dumped in open waste land. done
clear
C)
It should be dumped in sanitary landfills. done
clear
D)
It should be sorted out into bio-degradable, non- biodegradable and recyclable wastes and treated separately. done
clear
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question_answer37)
Match Column-1 with Column- II and select the correct answer using the codes given below.
| Column-I | | Column-II |
A. | Nitrous oxide | I. | Secondary pollutant |
B. | Chlorofluorocarbon | II. | Combustion of fossil fuels, |
C. | Methane | III. | Denitrification |
D. | Ozone(\[{{O}_{3}}\]) | IV. | Refrigerators |
E. | Carbon dioxide | V. | Cattle, rice field, toilets. |
A)
A-III; B- IV; C- V; D- I; E-II done
clear
B)
A-V; B- I; C- III; D-IV; E- II done
clear
C)
A-IV; B-V; C-I; D-II; E-III done
clear
D)
A-1; B-III; C-IV; D-V; E-II done
clear
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question_answer38)
Which of the following does not cause pollution?
A)
Thermal power project done
clear
B)
Steel power plant done
clear
C)
Automobiles done
clear
D)
Hydroelectric project done
clear
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question_answer39)
The enrichment of water by nutrients is:
A)
Mineralization done
clear
B)
Biomagnification done
clear
C)
Eutrophication done
clear
D)
All of these done
clear
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question_answer40)
Non-point source of water pollution is:
A)
Sewage outlet' done
clear
B)
Effluents from a factory done
clear
C)
Agricultural runoff done
clear
D)
All of these done
clear
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question_answer41)
Photochemical smog always contains:
A)
Aluminum ions done
clear
B)
Methane done
clear
C)
Ozone done
clear
D)
Phosphorus done
clear
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question_answer42)
Match column-I with column-II and select the correct option.
| Column-I | | Column-II |
A. | Catalytic converter | I. | Particulate matter |
B. | Electrostatic | II. | Carbon monoxide and nitrogen oxides |
C. | Earmuffs | III. | High noise level |
D. | Land fills | IV. | Solid wastes |
A)
A-I; B-II; C-III; D-IV done
clear
B)
A-II; B-I; C-III; D-IV done
clear
C)
A-IV; B-III; C-II; D-I done
clear
D)
A-III; B-II; C-IV; D-I done
clear
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question_answer43)
Lichens are important in the studies on atmosphere pollution because they:
A)
can grow in polluted atmosphere done
clear
B)
can readily multiply in polluted atmosphere done
clear
C)
efficiently purify the atmosphere done
clear
D)
are very sensitive to pollutants like sulphur dioxide done
clear
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question_answer44)
Carbon monoxide (CO) is harmful to man because:
A)
It forms carbolic acid. done
clear
B)
It generates excess \[C{{O}_{2}}\] done
clear
C)
It is carcinogenic. done
clear
D)
It competes with\[{{O}_{2}}\]for haemoglobin. done
clear
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question_answer45)
Identify the deleterious effect of deforestation.
(i) CO, concentration increases. |
(ii) Habitat destruction leading to loss of biodiversity. |
(iii) Disturbance in hydrologic cycle. |
(iv) Desertification. |
Which of the statement given above are correct? |
A)
(i), (ii) and (iii) done
clear
B)
(ii), (iii) and (iv) done
clear
C)
(i), (iii) and (iv) done
clear
D)
(i), (ii), (iii) and (iv) done
clear
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question_answer46)
The greatest air pollution disaster during recent years had been witnessed in:
A)
Kolkata done
clear
B)
Ahmedabad done
clear
C)
Agra done
clear
D)
Bhopal done
clear
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question_answer47)
Which of the following is/are correct regarding Montreal Protocol?
(i) Persistent organic pollutants. |
(ii) Global warming and climate change. |
(iii) To control the emission of ozone depleting substances. |
(iv) Biosafety of genetically modified organisms. |
A)
(i) and (iii) done
clear
B)
(iii) only done
clear
C)
(iii) and (iv) done
clear
D)
(i) and (iii) done
clear
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question_answer48)
The sea water gets polluted mainly due to:
A)
Industrial waste. done
clear
B)
Oil spills. done
clear
C)
Death of marine fauna done
clear
D)
None of these done
clear
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question_answer49)
The mine workers are most likely to suffer from:
A)
Beri-Beri done
clear
B)
Osteomalacia done
clear
C)
Scurvy done
clear
D)
Xerophthalamia done
clear
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question_answer50)
'Sonic booms'refer to:
A)
Shock waves done
clear
B)
Noise of traffic done
clear
C)
Noise of siren done
clear
D)
Nitrates done
clear
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question_answer51)
Which among the following is likely to have the highest levels of D.D.T. depositions in its body?
A)
Eel done
clear
B)
Crab done
clear
C)
Seagull done
clear
D)
Phytoplankton done
clear
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question_answer52)
Match column-I with column-II and select the correct answer using the codes given below.
| Column-I | | Column-II |
A. | Carbon Monoxide | I. | Qualitative Pollutant |
B. | DDT | II. | Freon |
C. | Chlorofluoro-methane | III. | Lung Cancer |
D. | Smoking | IV. | Quantitative Pollutant |
E. | Acid rain | V. | Nitrogen and Sulphur oxides |
A)
A-II; B-I; C-IV; D-V; E-III done
clear
B)
A-IV; B-I; C-II; D-III; E-V done
clear
C)
A-III; B-II; C-IV; D-I; E-V done
clear
D)
A-V; B-III; C-I; D-II; E-IV done
clear
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question_answer53)
Which of the following statements about eutrophication are correct?
(i) It can be a naturally occurring process. |
(ii) It is commonly found in standing rather than running water. |
(iii) It can lead to oxygen depletion. |
(iv) It is commonly associated with high levels of phosphates and nitrates. |
A)
(iii) and (iv) done
clear
B)
(i), (ii) and (iii) done
clear
C)
(ii), (iii) and (iv) done
clear
D)
All of the above done
clear
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question_answer54)
Main air pollutant is:
A)
\[C{{O}_{2}}\] done
clear
B)
CO done
clear
C)
\[{{N}_{2}}\] done
clear
D)
Sulphur done
clear
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question_answer55)
The scrubber is used mainly to remove the following gases from the exhaust after spraying water/lime:
A)
\[C{{O}_{2}}\] done
clear
B)
\[S{{O}_{2}}\] done
clear
C)
\[{{O}_{2}}\,\And \,{{N}_{2}}\] done
clear
D)
\[CO\,\And \,C{{O}_{2}}\] done
clear
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question_answer56)
Which one of the following is a most efficient device to eliminate particulate matters from the industrial emissions?
A)
Cyclonic separators done
clear
B)
Trajectory separators done
clear
C)
Incineration done
clear
D)
Electrostatic precipitator done
clear
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question_answer57)
Soil fertility can be destroyed by:
A)
cutting down forests done
clear
B)
acid rain done
clear
C)
overgrazing and overirrigation done
clear
D)
All of the above done
clear
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question_answer58)
Secondary air pollutant is:
A)
PAN done
clear
B)
CO done
clear
C)
SO, done
clear
D)
aerosols done
clear
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question_answer59)
The most harmful effect of ionizing radiations precisely involves:
A)
Cell membranes done
clear
B)
DNA done
clear
C)
Mitochondria and ribosomes done
clear
D)
Nucleus done
clear
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question_answer60)
Among the following environmental pollutants, which one is concerned with biological amplification?
A)
\[S{{O}_{2}}\] done
clear
B)
\[{{O}_{3}}\,and\,C{{O}_{2}}\] done
clear
C)
Hg and fungicides done
clear
D)
\[N{{O}_{2}}\] done
clear
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question_answer61)
The amount of freshwater of the earth frozen as polar or glacial ice is:
A)
0.5% done
clear
B)
0.02% done
clear
C)
0.01% done
clear
D)
1.97% done
clear
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question_answer62)
Which one has the least greenhouse effect?
A)
Carbon dioxide done
clear
B)
Nitrogen gas done
clear
C)
Water vapours done
clear
D)
Ozone done
clear
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question_answer63)
If global warming continues, the organism which may face more severe threat is:
A)
Cow done
clear
B)
Dog done
clear
C)
Snow leopard done
clear
D)
Dolphin done
clear
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question_answer64)
All organic substance found in the biosphere necessarily contain:
A)
Silica done
clear
B)
Carbon done
clear
C)
Oxygen done
clear
D)
Nitrogen done
clear
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question_answer65)
Which one of the following is an environment related disorder with the correct main cause?
A)
Black lung disease (pneumoconiosis) found mainly in workers in stone quarries and crushers. done
clear
B)
Blue baby disease (methaemoglobinaemia) due to heavy use of nitrogenous fertilizers in the area. done
clear
C)
Non-hodgkin's lymphoma found mainly in workers involved in manufacture of neem based pesticides. done
clear
D)
Skin cancer mainly in people exposed to benzene and methane. done
clear
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question_answer66)
Fishes die by sewage because:
A)
Of its bad smell. done
clear
B)
It replaces food material of fishes. done
clear
C)
It increases oxygen competition among fishes. done
clear
D)
\[C{{O}_{2}}\] is mixed in large amount in water. done
clear
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question_answer67)
Water pollution can be stopped best by:
A)
Treating effluents to remove injurious chemicals. done
clear
B)
Rearing more fishes. done
clear
C)
Cultivating useful water plants. done
clear
D)
Spraying with DDT. done
clear
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question_answer68)
Industrial waste containing non-biodegradable substance left in a pool of water and a person eating a fish of that water, showing signs of toxicity is a typical example of: JH Critical
A)
biological multiplication. done
clear
B)
biological magnification. done
clear
C)
accidental care of toxicity. done
clear
D)
not fish but the person showing toxic effect. done
clear
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question_answer69)
The automobile emission can be reduced by adding the following in the petrol:
A)
Calcium salts done
clear
B)
Cobalt salts done
clear
C)
Silicon oil done
clear
D)
Barium salts done
clear
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question_answer70)
Heavy metals are detoxified in plants by:
A)
ABA done
clear
B)
Allelopathins done
clear
C)
Phytochelatins done
clear
D)
Phytoalexins done
clear
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question_answer71)
In B.O.D. test, oxygen plays an important role to:
A)
Destroy inorganic matter. done
clear
B)
Destroy pollution. done
clear
C)
Destroy waste organic matter. done
clear
D)
None of the above done
clear
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question_answer72)
Two lakes, A and B are identical in all aspects except that lake A has higher temperature. Which of the following is true?
A)
A has higher rate of oxygen dissolution done
clear
B)
B has higher rate of oxygen dissolution done
clear
C)
Oxygen dissolution of both is the same done
clear
D)
Both have same BOD done
clear
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question_answer73)
Blue baby syndrome is due to:
A)
Mercury in drinking water. done
clear
B)
Excess of nitrates in drinking water. done
clear
C)
Cd-poisoning. done
clear
D)
As-poisoning. done
clear
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question_answer74)
Which of the following strategy is incorrect approach to reduce global warming?
A)
Reducing the greenhouse gas emission by limiting the use of fossil fuels. done
clear
B)
Increase the vegetation cover particularly the forest for photosynthetic utilization of\[C{{O}_{2}}\]. done
clear
C)
Minimizing the use of nitrogen fertilizers in agriculture for reducing\[N{{O}_{2}}\]emission. done
clear
D)
Increasing the use of air conditioners, refrigeration unit and production of plastic foams and propellants in aerosal spray cans. done
clear
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question_answer75)
The antiknock agent added to unleaded petrol is:
A)
Tetraethyllead done
clear
B)
Tetramethyllead done
clear
C)
Dibromoethane done
clear
D)
Methyltertiary butyl ether done
clear
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question_answer76)
Deforestration has caused:
A)
more floods and decrease of temperature. done
clear
B)
more drought and decrease of temperature. done
clear
C)
shortage of food products. done
clear
D)
soil erosion and loss of wildlife. done
clear
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question_answer77)
Prolonged water logging in an agricultural fields is likely to create the problem of:
A)
poor aeration and low salinity done
clear
B)
poor aeration and high salinity done
clear
C)
poor aeration and high acidity done
clear
D)
metal toxicity and proper aeration done
clear
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question_answer78)
Secondary treatment of sewage is:
A)
biological degradation of organic material by microorganisms under controlled conditions. done
clear
B)
chlorination to kill pathogenic microbes. done
clear
C)
separation of heavy metals from sewage. done
clear
D)
sedimentation of heavy particles. done
clear
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question_answer79)
Agenda-21 was adopted in:
A)
Kyoto protocol done
clear
B)
Earth summit done
clear
C)
Helsinki declaration done
clear
D)
Montreal protocol done
clear
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question_answer80)
So-called greenhouse gases have been given this name because they:
A)
trap the heat radiated from Earth's surface. done
clear
B)
are produced by plants. done
clear
C)
are necessary for plant growth. done
clear
D)
are similar to gases produced in a greenhouse done
clear
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