1. In cities like Mumbai and Kolkata, the major air pollutants are:

A. ozone

B.carbon monoxide and oxides of sulphur

C. hydrocarbons and hot air

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D. algal spores and marsh gas

2. Thermal pollution of water bodies is due to discharge of:

A. chemicals from industries

B. heat from power plants

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C. agricultural runs off water

D. wastes from mining

3. Recent reports of acid rains in some industrial cities are due to the effect of atmospheric pollution by:

A. excessive release of NO2 and SO2 by burning of fossils fuels

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B. excessive release of CO2 by burning of fuels like wood and charcoal, cutting of forests and increased animal population

C. excessive release of NH3 by industrial plants and coal gas

D. excessive release of CO in atmosphere by incomplete combustion of coke, charcoal and other carbonaceous fuels in paucity of oxygen

4. Which one of the following is protective device?

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A. Camouflage B. Competition

C. Symbiosis D. Commensalism

5. Biologists celebrate 5th June as:

A. Darwin’s birthday

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B. World Hygiene Day

C. World Environment Day

D. World Population Day

6. Ultra violet rays of the sun-light result in formation of:

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A. CO

B. SO2

C. ozone

D. fluorides

7. Which of the following will not cause any atmospheric pollution?

A. Hydrogen

B. Sulphur dioxide

C. Carbon dioxide

D. Carbon monoxide

8. Spraying of DDT on crops produces pollution of:

A. soil and water only

B. air and soil only

C. air, soil and water

D. air and water only

9. Major aerosol pollutant present in the jet plane emission is:

A. sulphur dioxide

B. fluorocarbon

C. carbon tetrachloride

D. carbon monoxide

10. Sewage water can be purified for recycling with the action of:

A. aquatic plants

B. penicillin

C. micro-organisms

D. fishes

11. Gases commonly referred to as green house gases are:

A. CH4, N2, CO2 and NH3

B. CO2, O2, NO2 and NH3

C. chlorofluorocarbons, CO2, NH3 and N2

D. CO2, chlorofluorocarbons, CH4 and NO2

12. Today concentration of green house gases is high because of:

A. use of refrigerator

B. increased combustion of oil and coal

C. deforestation

D. All of the above

13. Acid rain is mainly caused by increased concentration (in atmosphere) of:

A. ozone and dust

B. NO2 and SO2

C. CO and CO,

D. NH3 and SO3

14. Minamata disease is a pollution related disease which results from:

A. oil spills in sea

B. release of human organic wastes into drinking water

C. accumulation of arsenic into drinking water

D. release of industrial wastes containing mercury into fishing waters

15. Which of the following chemicals is responsible for the reduction of ozone content of the atmosphere?

A. CFC

B. NO2

C. CO2

D. SO2

16. What do you understand by green house effect?

A. Increase in temperature due to increase in oxygen concentration of the atmosphere.

B. Decrease in temperature due to decrease in oxygen concentration.

C. Increase in temperature due to increase in carbon dioxide concentration of the atmosphere.

D. Decrease in temperature due to decrease in carbon dioxide concentration of the atmosphere.

17. Checking of reradiating heat by atmospheric dust, water vapour, ozone, C02, etc., is known as:

A. green house effect

B. radioactive effect

C. ozone layer effect

D. solar effect

18. Photochemical smog is related to the pollution of:

A. soil

B. water

C. noise

D. air

19. Most important causative pollutant of soil may be:

A. plastics

B. iron junks

C. detergents

D. hydrogen

20. Taj Mahal is threatened due to the effect of:

A. chlorine

B. sulphur dioxide

C. oxygen

D. hydrogen

21. A dental disease characterised by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element?

A. Boron

B. Chlorine

C. Fluorine

D. Mercury

22. When huge amount of sewage is dumped into a river the BOD will:

A. increase

B. remain unchanged

C. slightly decrease

D. decrease

23. Which is a fungicide?

A. 2, 4-D

B. DDT

C. Bordeaux mixture

D. BHC

24. Rotenone is:

A. a bioherbicide

B. an insect hormone

C. a natural herbicide

D. a natural insecticide

25. Some effects of SO2 and its transformation products on plants include:

A. chlorophyll destruction

B. plasmolysis

C. Golgi body destruction

D. None of these

26. Lichens are important in the studies on atmospheric pollution because they:

A. can also grow in greatly polluted atmosphere

B. can readily multiply in polluted atmosphere

C. efficiently purify the atmosphere

D. is sensitive to pollutants

27. If water pollution continues at its present rate, it will eventually:

A. stop water cycle

B. prevent precipitation

C. makes oxygen molecules unavailable to water plants

D. makes nitrate molecules unavailable to water plants

28. In a polluted lake the index of pollution is:

A. Daphnia

B. Artemia

C. frog

D. None of these

29. All the following contribute to pollution except:

A. thermal power plant

B. automobiles

C. nuclear power plant

D. hydroelectric power project

30. Radioactive strontium as a result of radioactive fall out is:

A. Sr80

B. Sr90

C. Sr85

D. Sr95

31. The molecular action of ultraviolet light is mainly reflected through:

A. destruction of hydrogen bonds in DNA

B. photodynamic action

C. formation of pyramiding

D. formation of sticky metaphase

32. Exposure of plants to high fluoride concentration results in necrosis or choruses characteristically in:

A. petiole but not in lamina

B. only midrib in lamina

C. leaf tip and leaf margins

D. stems tips only

33. Non-renewable sources of Energy and Renewable sources of Energy come under the ministry of:

A. Non-Conventional Energy, India

B. Environment and Forests, India

C. Coal and Petroleum, India

D. None of the above

34. A system that captures sunlight directly within a structure and converts it to low- temperature heat for space heating is:

A. Passive Solar System

B. Active Solar System

C. Convection System

D. Radiation System

35. A system that specially designed collectors concentrate solar energy and store it as heat for space heating and heating water is:

A. Passive Solar System

B. Active Solar System

C. Radiation System

D. Convection System

36. The true statement about solar energy heating space and water is:

A. The energy supply is free and naturally available on sunny days

B. The energy supply is not available at night and on cloudy days /

C. The technology is well developed and can be installed quickly

D. All of the above

37. The instrument that converts solar energy into electrical energy by solar cells is:

A. Photovoltaic cells

B. AC generator

C. DC generator

D. None of these

38. The world’s largest producer of electricity from hydropower is:

A. United States of America

B. India

C. Canada

D. Russia

39. OTEC is:

A. Ocean Thymic Electrical Counter

B. Ocean Thermal Energy Conservation

C. Oriental Thermal Energy Conservation

D. Okahama Thermal Electronic Centre

41. Which wavelength of ultraviolet light of sunlight combines with ozone molecule?

A. Ultraviolet-A

B. Ultraviolet-C

C. Ultraviolet-B

D. Ultraviolet-D

42. In particular, humans had been injecting enormous quantities of ozone-destroying substances into atmosphere, especially a class of chemical known as:

A. Aerosol spray

B. Chlorofluorocarbons

C. Freons

D. Radionuclides

43. Which statement is TRUE?

A. Magneto-hydrodynamic generators convert solar radiation into electricity

B. Coal can be converted to gaseous, liquid or low-sulphur, low ash solid fuels

C. Sunlight depend on photosensitive layer

D. None of the above

44. The process of splitting bigger hydrocarbon into smaller hydrocarbon molecules is:

A. combustion

B. pyrolysis

C. cracking

D. decomposition

45. Main constituent of Natural gas is:

A. CH4

B.C2H6

C. CO,

D. H2

46. Which of the following types of coal contain? Highest percentage of volatile matter?

A. Anthracite

B. Peat

C. Lignite

D. Bituminous

47. Suitability of a diesel fuel is determined by:

A. Octane number

B. Centime number

C. Percentage of carbon

D. Length of hydrocarbon chain

48. Consider, which is TRUE?

A. Half of the solar radiation is in the visible region

B. Both sun and earth emit electromagnetic radiation

C. The sun emits electromagnetic radiation like a black body

D. All of the above

49. Incomplete combustion is judged by:

A. measuring of oxygen in fuel gases

B. excess air of fuel gases

C. rainfall in the valley

D. All of the above

50. The maximum temperature reached, when the coal is completely burnt in the air is:

A. ignition temperature

B. calorific intensity

C. fusion temperature

D. None of these

Answers:

1

2

3

4

5

6

7

8

9

10

B

B

A

A

C

C

A

A

B

C

11

12

13

14

15

16

17

18

19

20

D

D

B

D

A

C

A

D

C

B

21

22

23

24

25

26

27

28

29

30

C

A

C

D

A

D

C

A

B

B

31

32

33

34

35

36

37

38

39

A

C

A

A

B

D

A

A

B

41

42

43

44

45

46

47

48

49

50

B

B

B

C

A

B

B

D

A

B