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

Potable water is considered to be

Question # 2

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

Question # 3

Acid rain is due to increase in atmospheric concentration of

Question # 4

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

Question # 5

Depletion of ozone layer is due to

Question # 6

Biodegradable pollutant is

Question # 7

Ultraviolet radiation from sun causes a reaction that produces

Question # 8

Which gasses are produced from landfills

Question # 9

Which step is unnecessary for purification of water for drinking purposes

Question # 10

Increasing skin cancer and high mutation rate are due to

Question # 11

Fungicides are the pesticides which

Question # 12

Shahi Qilla may be destroyed by

Question # 13

The largest item which is recycled is

Question # 14

Which one of the following is not air pollutant gas

Question # 15

Which is not the affect of polluted air on environment

Question # 16

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 17

Which is not the condition for the formation of smog

Question # 18

Pick up the correct statement

Question # 19

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 # 20

Drawback DDT as presticide is

Question # 21

Which is not a component of environment

Question # 22

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

Question # 23

Chief air pollutant which is likely to deplete ozone layer

Question # 24

Which one is not a pollutant normally?

Question # 25

Water pollution is mainly due to

Question # 26

In the atmosphere, O2is about

Question # 27

The amount of Si in the lithosphere is about

Question # 28

Minamata disease is due to pollution of

Question # 29

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

Question # 30

Which factor is helping to reduce the environmental pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
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 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
4 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
5 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
7 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
8 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
9 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
10 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

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