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

Minamata disease is due to pollution of

Question # 2

Ultraviolet radiation from sun causes a reaction that produces

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

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

Question # 5

Acid rains are produced by

Question # 6

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

Question # 7

B.O.D is connected with

Question # 8

The pH range of the acid rain is

Question # 9

Which of the following human activities are contaminating surface and ground waters

Question # 10

Phosphate pollution is caused by

Question # 11

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

Question # 12

Atomospheric pollutant is

Question # 13

Which one is the major reason for pollution in high cities?

Question # 14

UV radiations bring about

Question # 15

The film forming components of paints are

Question # 16

BOD is

Question # 17

Eutrophication causes reduction in

Question # 18

Photochemical smog is caused by

Question # 19

Chief source of water and soil pollution is

Question # 20

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

Question # 21

Drained sewage has B.O.D

Question # 22

Ecology is a science of environment and deals specially with

Question # 23

Which of the following is not an air

Question # 24

Water is often treated with chlorine to

Question # 25

SO2Makes ______ acid rains

Question # 26

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

Question # 27

Potable water is considered to be

Question # 28

Spraying of DDT produces pollution of

Question # 29

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

Question # 30

Which factor is helping to reduce the environmental pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
2 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
3 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
4 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
5 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
6 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
7 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
8 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
9 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
10 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth

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