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 amount of Si in the lithosphere is about

Question # 2

Phosphate pollution is caused by

Question # 3

In purification of potable water the coagulant used is

Question # 4

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

Question # 5

As it passes into food chain, the concentration of DDT

Question # 6

Acid rain is due to increase in atmospheric concentration of

Question # 7

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

Question # 8

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

Question # 9

SO2Makes ______ acid rains

Question # 10

BOD is

Question # 11

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

Question # 12

Carbon monoxide is harmful to human beings as it

Question # 13

Which gasses are produced from landfills

Question # 14

Which one of the following is not air pollutant gas

Question # 15

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

Question # 16

Pick up the correct statement

Question # 17

Domestic waste mostly constitutes

Question # 18

Exposure to CO results in

Question # 19

Chromium (VI) is highly toxic and can cause

Question # 20

Photochemical smog is caused by

Question # 21

Acid rains are produced by

Question # 22

The amount of oxygen in the lithosphere is about

Question # 23

DDT is

Question # 24

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 25

Potable water is considered to be

Question # 26

Burning of fossil fuels is the main source of pollution

Question # 27

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 28

Which is not the affect of polluted air on environment

Question # 29

Fungicides are the pesticides which

Question # 30

B.O.D is connected with

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
2 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
3 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
4 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
5 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
6 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
7 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
8 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
9 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
10 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%

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