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

The film forming components of paints are

Question # 2

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

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 rain is due to increase in atmospheric concentration of

Question # 5

The amount of Si in the lithosphere is about

Question # 6

Environmental pollution affects

Question # 7

Chief air pollutant which is likely to deplete ozone layer

Question # 8

Atomospheric pollutant is

Question # 9

Chromium (VI) is highly toxic and can cause

Question # 10

Cyclone collector is used for minimizing

Question # 11

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

Question # 12

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

Question # 13

Polycyolic aromatic hydrocarbons are taught to be

Question # 14

Which is not the affect of polluted air on environment

Question # 15

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

Question # 16

Potable water is considered to be

Question # 17

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 18

In incinerating the waste is burnt at

Question # 19

In the atmosphere, O2is about

Question # 20

Carbon monoxide is pollutant as it

Question # 21

Which is not a component of environment

Question # 22

Water is often treated with chlorine to

Question # 23

Fungicides are the pesticides which

Question # 24

SO2and NO2produce pollution by increasing

Question # 25

Which factor is helping to reduce the environmental pollution

Question # 26

In the atmosphere, CO2is about

Question # 27

Photochemical smog is caused by

Question # 28

Carbon monoxide is harmful to human beings as it

Question # 29

Minamata disease is due to pollution of

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
3 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
4 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
5 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
6 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
7 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
8 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
9 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
10 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide

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