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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  • Time Allowed30

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ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

Sulphur dioxide affects

Question # 2

UV radiations bring about

Question # 3

As it passes into food chain, the concentration of DDT

Question # 4

Acid rains are produced by

Question # 5

Which gas is not a constituent of atmosphere

Question # 6

Pick up the correct statement

Question # 7

Minamata disease is due to pollution of

Question # 8

Photochemical smog is caused by

Question # 9

Which heavy metals do not have any safe limits

Question # 10

Which one is the most toxic?

Question # 11

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

Question # 12

Which of the following is not an air

Question # 13

Which is not the condition for the formation of smog

Question # 14

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

Question # 15

The amount of Si in the lithosphere is about

Question # 16

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

Question # 17

A single chlorine free radical can destroy how many ozone molecules

Question # 18

Which of the following waste material is not recycled for use again

Question # 19

Swage water is purified by

Question # 20

Drained sewage has B.O.D

Question # 21

Which factor is helping to reduce the environmental pollution

Question # 22

Ozone hole is maximum over

Question # 23

Water pollution is mainly due to

Question # 24

Chloroflurocarbon releases a chemical harmful to ozone

Question # 25

Which is not the affect of polluted air on environment

Question # 26

In incinerating the waste is burnt at

Question # 27

Ecosystem is a smaller unit of

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
4 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
5 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
6 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
7 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
8 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
9 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
10 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these

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