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

Photochemical smog is caused by

Question # 2

Increasing skin cancer and high mutation rate are due to

Question # 3

Biodegradable pollutant is

Question # 4

B.O.D is connected with

Question # 5

NO and NO2gases in atmosphere are represented by

Question # 6

Chief air pollutant which is likely to deplete ozone layer

Question # 7

Result of ozone hole is

Question # 8

Atomospheric pollutant is

Question # 9

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

Question # 10

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 # 11

Potable water is considered to be

Question # 12

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

Drained sewage has B.O.D

Question # 15

Sulphur dioxide affects

Question # 16

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

Question # 17

Chromium (VI) is highly toxic and can cause

Question # 18

The pH range of the acid rain is

Question # 19

Ozone depletion in stratosphere shall result in

Question # 20

Phosphate pollution is caused by

Question # 21

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

Question # 22

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 23

Oceans cove ______ percent of the surface of the earth

Question # 24

In incinerating the waste is burnt at

Question # 25

In the atmosphere, O2is about

Question # 26

Atmosphere of big/metropolitan cities is polluted most by

Question # 27

Which of the following is not an air

Question # 28

The film forming components of paints are

Question # 29

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 30

Which heavy metals do not have any safe limits

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
4 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
5 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
6 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
7 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
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 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
10 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these

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