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

NO and NO2gases in atmosphere are represented by

Question # 2

Chloroflurocarbon releases a chemical harmful to ozone

Question # 3

Soil remediation means

Question # 4

Chief air pollutant which is likely to deplete ozone layer

Question # 5

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

Question # 6

Atomospheric pollutant is

Question # 7

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 8

The region of earth capable of supporting life is

Question # 9

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

Question # 10

Swage water is purified by

Question # 11

In purification of potable water the coagulant used is

Question # 12

Which gasses are produced from landfills

Question # 13

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

Question # 14

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

Question # 15

SO2Makes ______ acid rains

Question # 16

Biodegradable pollutant is

Question # 17

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

Question # 18

Minamata disease is due to pollution of

Question # 19

Air pollution is not caused by

Question # 20

Which is not the condition for the formation of smog

Question # 21

Environmental pollution affects

Question # 22

Drawback DDT as presticide is

Question # 23

Which of the following is not an air

Question # 24

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

Question # 25

Which is not a component of environment

Question # 26

Drained sewage has B.O.D

Question # 27

Which heavy metals do not have any safe limits

Question # 28

Depletion of ozone layer is due to

Question # 29

Ultraviolet radiation from sun causes a reaction that produces

Question # 30

Sulphur dioxide affects

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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 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
3 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
4 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
5 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
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 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
9 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
10 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation

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