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

In Antarctica ozone depletion is due to the formation of following compound

Question # 2

Phosphate pollution is caused by

Question # 3

The amount of oxygen in the lithosphere is about

Question # 4

Which gas is not a constituent of atmosphere

Question # 5

Shahi Qilla may be destroyed by

Question # 6

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

Question # 7

SO2Makes ______ acid rains

Question # 8

Eutrophication causes reduction in

Question # 9

Environmental pollution affects

Question # 10

Which one is the most toxic?

Question # 11

Oceans cove ______ percent of the surface of the earth

Question # 12

What is the cause of water pollution

Question # 13

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

Question # 14

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

Question # 15

Increasing skin cancer and high mutation rate are due to

Question # 16

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 17

Water which his considered to be safe for human consumption is known as

Question # 18

Minamata disease is due to pollution of

Question # 19

The amount of Si in the lithosphere is about

Question # 20

Spraying of DDT produces pollution of

Question # 21

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

Question # 22

Atmosphere of big/metropolitan cities is polluted most by

Question # 23

Air pollution is not caused by

Question # 24

Increased asthmatic attacks in certain seasons are related to

Question # 25

B.O.D is connected with

Question # 26

Water pollution is mainly due to

Question # 27

Carbon monoxide is pollutant as it

Question # 28

Ultraviolet radiation from sun causes a reaction that produces

Question # 29

The pH range of the acid rain is

Question # 30

Ecology is a science of environment and deals specially with

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
2 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
3 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
4 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
5 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
7 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
8 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
9 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
10 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

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