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

Drawback DDT as presticide is

Question # 2

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

Question # 3

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 4

Atmosphere of big/metropolitan cities is polluted most by

Question # 5

Which one is not a pollutant normally?

Question # 6

The region of earth capable of supporting life is

Question # 7

Which is not the condition for the formation of smog

Question # 8

The largest item which is recycled is

Question # 9

Which one is the most toxic?

Question # 10

As it passes into food chain, the concentration of DDT

Question # 11

Mottling of teeth is due to presence of an element in drinking water

Question # 12

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

Question # 13

Sulphur dioxide affects

Question # 14

The % of CO2is the atmosphere is

Question # 15

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

Question # 16

Cyclone collector is used for minimizing

Question # 17

Chief source of water and soil pollution is

Question # 18

Increasing skin cancer and high mutation rate are due to

Question # 19

The normal amount of overhead ozone is about

Question # 20

Drained sewage has B.O.D

Question # 21

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 # 22

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 23

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

Question # 24

B.O.D is connected with

Question # 25

Which factor is helping to reduce the environmental pollution

Question # 26

Chloroflurocarbon releases a chemical harmful to ozone

Question # 27

Pick up the correct statement

Question # 28

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

Question # 29

A pollutant affects

Question # 30

Chief air pollutant which is likely to deplete ozone layer

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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 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
3 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
4 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
5 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
6 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
7 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
8 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
9 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
10 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU

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