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

Drawback DDT as presticide is

Question # 2

In the atmosphere, O2is about

Question # 3

Air pollution is not caused by

Question # 4

In purification of potable water the coagulant used is

Question # 5

The normal amount of overhead ozone is about

Question # 6

Acid rain is due to increase in atmospheric concentration of

Question # 7

Increased asthmatic attacks in certain seasons are related to

Question # 8

Most hazardous metal pollutant of automobile exhaust is

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

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 # 11

Domestic waste mostly constitutes

Question # 12

Which is not a component of environment

Question # 13

The % of CO2is the atmosphere is

Question # 14

Which one of the following is not air pollutant gas

Question # 15

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

Question # 16

The amount of Si in the lithosphere is about

Question # 17

Which gasses are produced from landfills

Question # 18

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 19

Which step is unnecessary for purification of water for drinking purposes

Question # 20

As it passes into food chain, the concentration of DDT

Question # 21

BOD is

Question # 22

SO2Makes ______ acid rains

Question # 23

Depletion of ozone layer is due to

Question # 24

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

Question # 25

Result of ozone hole is

Question # 26

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

Question # 27

Ozone depletion in stratosphere shall result in

Question # 28

Pick up the correct statement

Question # 29

Drained sewage has B.O.D

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
3 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
4 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
5 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
6 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
7 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
8 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
9 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
10 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2

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