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

The region of earth capable of supporting life is

Question # 2

Air pollution is not caused by

Question # 3

Burning of fossil fuels is the main source of pollution

Question # 4

Photochemical smog is caused by

Question # 5

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

Question # 6

Oceans cove ______ percent of the surface of the earth

Question # 7

Ozone hole is maximum over

Question # 8

In incinerating the waste is burnt at

Question # 9

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

Question # 10

Cyclone collector is used for minimizing

Question # 11

Potable water is considered to be

Question # 12

Which one of the following is not air pollutant gas

Question # 13

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

Question # 14

Ozone hole refers to

Question # 15

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

Question # 16

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

Question # 17

SO2Makes ______ acid rains

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

Chromium (VI) is highly toxic and can cause

Question # 20

Eutrophication causes reduction in

Question # 21

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 22

The largest item which is recycled is

Question # 23

Water pollution is mainly due to

Question # 24

Drawback DDT as presticide is

Question # 25

Which is not the condition for the formation of smog

Question # 26

A pollutant affects

Question # 27

In the atmosphere, O2is about

Question # 28

Which gas is not a constituent of atmosphere

Question # 29

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 # 30

The pH range of the acid rain is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
2 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
3 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
4 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
5 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
6 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
7 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
8 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
9 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
10 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these

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