ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

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ECAT Chemistry Chapter 27 Environmental Chemistry

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Question # 1

The region of earth capable of supporting life is

Question # 2

Carbon monoxide is pollutant as it

Question # 3

Mottling of teeth is due to presence of an element in drinking water

Question # 4

Which causes water pollution?

Question # 5

Which is not the condition for the formation of smog

Question # 6

Water pollution is mainly due to

Question # 7

Chromium (VI) is highly toxic and can cause

Question # 8

B.O.D is connected with

Question # 9

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 10

Domestic waste mostly constitutes

Question # 11

The normal amount of overhead ozone is about

Question # 12

Which gas is not a constituent of atmosphere

Question # 13

Phosphate pollution is caused by

Question # 14

Which is not a method for solid waste management

Question # 15

The amount of oxygen in the lithosphere is about

Question # 16

Which of the following human activities are contaminating surface and ground waters

Question # 17

Pick up the correct statement

Question # 18

What is the cause of water pollution

Question # 19

Most hazardous metal pollutant of automobile exhaust is

Question # 20

Oceans cove ______ percent of the surface of the earth

Question # 21

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 22

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 23

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 24

SO2Makes ______ acid rains

Question # 25

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 26

Drained sewage has B.O.D

Question # 27

Sulphur dioxide affects

Question # 28

Ecology is a science of environment and deals specially with

Question # 29

In Antarctica ozone depletion is due to the formation of following compound

Question # 30

Chief air pollutant which is likely to deplete ozone layer

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
2 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
3 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
4 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
5 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
6 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
7 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
8 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
9 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
10 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth

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