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

Increased asthmatic attacks in certain seasons are related to

Question # 2

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

Question # 3

Cyclone collector is used for minimizing

Question # 4

Minamata disease is due to pollution of

Question # 5

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

Question # 6

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

Question # 7

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 8

Which heavy metals do not have any safe limits

Question # 9

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 10

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 11

As it passes into food chain, the concentration of DDT

Question # 12

The largest item which is recycled is

Question # 13

Which of the following waste material is not recycled for use again

Question # 14

Which is not a component of environment

Question # 15

Chief air pollutant which is likely to deplete ozone layer

Question # 16

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 17

Pollution is

Question # 18

Acid rains are produced by

Question # 19

What is the cause of water pollution

Question # 20

Shahi Qilla may be destroyed by

Question # 21

Which one is not a pollutant normally?

Question # 22

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

Question # 23

Depletion of ozone layer is due to

Question # 24

Classical smog occurs in palces of

Question # 25

The amount of oxygen in the lithosphere is about

Question # 26

Water is often treated with chlorine to

Question # 27

Atomospheric pollutant is

Question # 28

Environmental pollution affects

Question # 29

The normal amount of overhead ozone is about

Question # 30

Fungicides are the pesticides which

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
2 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
3 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
4 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
5 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
6 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
7 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
8 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
9 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+
10 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97

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