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

Ozone depletion in stratosphere shall result in

Question # 2

Acid rains are produced by

Question # 3

Which step is unnecessary for purification of water for drinking purposes

Question # 4

Drawback DDT as presticide is

Question # 5

Chief source of water and soil pollution is

Question # 6

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

Question # 7

The % of CO2is the atmosphere is

Question # 8

Which gas is not a constituent of atmosphere

Question # 9

Carbon monoxide is pollutant as it

Question # 10

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 11

Increasing skin cancer and high mutation rate are due to

Question # 12

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

Question # 13

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

Question # 14

Swage water is purified by

Question # 15

Phosphate pollution is caused by

Question # 16

The amount of oxygen in the lithosphere is about

Question # 17

Chromium (VI) is highly toxic and can cause

Question # 18

NO and NO2gases in atmosphere are represented by

Question # 19

A single chlorine free radical can destroy how many ozone molecules

Question # 20

The normal amount of overhead ozone is about

Question # 21

Increased asthmatic attacks in certain seasons are related to

Question # 22

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

Question # 23

Eutrophication causes reduction in

Question # 24

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

Question # 25

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

Question # 26

In the atmosphere, O2is about

Question # 27

Ozone hole refers to

Question # 28

Which is not a method for solid waste management

Question # 29

B.O.D is connected with

Question # 30

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
2 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
3 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
4 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
5 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
6 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
7 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
8 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
9 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
10 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere

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