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

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 2

Photochemical smog is caused by

Question # 3

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

Question # 4

Acid rains are produced by

Question # 5

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

Question # 6

In incinerating the waste is burnt at

Question # 7

Depletion of ozone layer is due to

Question # 8

The amount of Si in the lithosphere is about

Question # 9

Phosphate pollution is caused by

Question # 10

Chief air pollutant which is likely to deplete ozone layer

Question # 11

Chloroflurocarbon releases a chemical harmful to ozone

Question # 12

Which is not the affect of polluted air on environment

Question # 13

Which of the following is not an air

Question # 14

Which heavy metals do not have any safe limits

Question # 15

Potable water is considered to be

Question # 16

DDT is

Question # 17

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 18

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

Question # 19

In the atmosphere, CO2is about

Question # 20

Domestic waste mostly constitutes

Question # 21

Ecosystem is a smaller unit of

Question # 22

Result of ozone hole is

Question # 23

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

Question # 24

The amount of oxygen in the lithosphere is about

Question # 25

Which one is the most toxic?

Question # 26

Burning of fossil fuels is the main source of pollution

Question # 27

Which causes water pollution?

Question # 28

Which factor is helping to reduce the environmental pollution

Question # 29

Increased asthmatic attacks in certain seasons are related to

Question # 30

Ultraviolet radiation from sun causes a reaction that produces

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
2 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
3 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
4 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
5 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
6 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+
7 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
8 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
9 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
10 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus

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