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

The amount of Si in the lithosphere is about

Question # 2

A single chlorine free radical can destroy how many ozone molecules

Question # 3

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 4

NO and NO2gases in atmosphere are represented by

Question # 5

SO2Makes ______ acid rains

Question # 6

Chloroflurocarbon releases a chemical harmful to ozone

Question # 7

Atmosphere of big/metropolitan cities is polluted most by

Question # 8

Acid rain is due to increase in atmospheric concentration of

Question # 9

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

Question # 10

Carbon monoxide is pollutant as it

Question # 11

Biodegradable pollutant is

Question # 12

Atomospheric pollutant is

Question # 13

Which one is not a pollutant normally?

Question # 14

B.O.D is connected with

Question # 15

Drained sewage has B.O.D

Question # 16

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 # 17

When chlorofluoro carbon are subjected to U.V. they form

Question # 18

Photochemical smog is caused by

Question # 19

Which one of the following is not air pollutant gas

Question # 20

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

Question # 21

Which of the following is not an air

Question # 22

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

Question # 23

A pollutant affects

Question # 24

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

Question # 25

DDT is

Question # 26

Which heavy metals do not have any safe limits

Question # 27

Acid rains are produced by

Question # 28

The amount of oxygen in the lithosphere is about

Question # 29

Which factor is helping to reduce the environmental pollution

Question # 30

Minamata disease is due to pollution of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
2 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
3 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
4 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
5 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
6 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
7 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
8 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
9 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
10 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost

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