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

00:00
Question # 1

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 2

Depletion of ozone layer is due to

Question # 3

Result of ozone hole is

Question # 4

Swage water is purified by

Question # 5

Air pollution is not caused by

Question # 6

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 7

Ecology is a science of environment and deals specially with

Question # 8

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

Question # 9

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 10

The % of CO2is the atmosphere is

Question # 11

Water is often treated with chlorine to

Question # 12

Which of the following is not an air

Question # 13

Domestic waste mostly constitutes

Question # 14

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

Question # 15

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 16

Which factor is helping to reduce the environmental pollution

Question # 17

Atomospheric pollutant is

Question # 18

Oceans cove ______ percent of the surface of the earth

Question # 19

Minamata disease is due to pollution of

Question # 20

Acid rain is due to increase in atmospheric concentration of

Question # 21

Water which his considered to be safe for human consumption is known as

Question # 22

The film forming components of paints are

Question # 23

Classical smog occurs in palces of

Question # 24

Carbon monoxide is harmful to human beings as it

Question # 25

UV radiations bring about

Question # 26

A single chlorine free radical can destroy how many ozone molecules

Question # 27

Phosphate pollution is caused by

Question # 28

NO and NO2gases in atmosphere are represented by

Question # 29

The largest item which is recycled is

Question # 30

Ozone layer of stratosphere requires protection from indiscriminate use of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
2 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
3 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
4 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
5 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
7 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
8 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
9 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
10 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these

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