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

A pollutant affects

Question # 2

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 3

A single chlorine free radical can destroy how many ozone molecules

Question # 4

Chief air pollutant which is likely to deplete ozone layer

Question # 5

Which one of the following is not air pollutant gas

Question # 6

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

Question # 7

Soil remediation means

Question # 8

Result of ozone hole is

Question # 9

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 # 10

Which is not a component of environment

Question # 11

The region of earth capable of supporting life is

Question # 12

As it passes into food chain, the concentration of DDT

Question # 13

Which is not a method for solid waste management

Question # 14

Which factor is helping to reduce the environmental pollution

Question # 15

Classical smog occurs in palces of

Question # 16

In the atmosphere, CO2is about

Question # 17

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

Question # 18

DDT is

Question # 19

Depletion of ozone layer is due to

Question # 20

The largest item which is recycled is

Question # 21

Acid rains are produced by

Question # 22

The film forming components of paints are

Question # 23

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 24

The pH range of the acid rain is

Question # 25

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

Question # 26

In purification of potable water the coagulant used is

Question # 27

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

Question # 28

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 29

Water pollution is mainly due to

Question # 30

The % of CO2is the atmosphere is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
2 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
3 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
4 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
5 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
6 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
7 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
8 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
9 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
10 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide

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