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

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

Question # 2

The pH range of the acid rain is

Question # 3

Which gas is not a constituent of atmosphere

Question # 4

Atmosphere of big/metropolitan cities is polluted most by

Question # 5

Swage water is purified by

Question # 6

Cyclone collector is used for minimizing

Question # 7

The amount of oxygen in the lithosphere is about

Question # 8

As it passes into food chain, the concentration of DDT

Question # 9

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

Question # 10

In the atmosphere, O2is about

Question # 11

The region of earth capable of supporting life is

Question # 12

Biodegradable pollutant is

Question # 13

Soil salinity can be measured by

Question # 14

Which is not a method for solid waste management

Question # 15

Chief air pollutant which is likely to deplete ozone layer

Question # 16

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

Question # 17

Chromium (VI) is highly toxic and can cause

Question # 18

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

Question # 19

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

Question # 20

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 21

Potable water is considered to be

Question # 22

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

Question # 23

Water is often treated with chlorine to

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

Carbon monoxide is harmful to human beings as it

Question # 26

Environmental pollution affects

Question # 27

Domestic waste mostly constitutes

Question # 28

Depletion of ozone layer is due to

Question # 29

Result of ozone hole is

Question # 30

Which step is unnecessary for purification of water for drinking purposes

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
2 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
3 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
4 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
5 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
6 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
7 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
8 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
9 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
10 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum

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