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

Chief air pollutant which is likely to deplete ozone layer

Question # 2

Drawback DDT as presticide is

Question # 3

Chief source of water and soil pollution is

Question # 4

Fungicides are the pesticides which

Question # 5

The amount of oxygen in the lithosphere is about

Question # 6

BOD is

Question # 7

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

Question # 8

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

Question # 9

Which gasses are produced from landfills

Question # 10

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 11

NO and NO2gases in atmosphere are represented by

Question # 12

The film forming components of paints are

Question # 13

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

Question # 14

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 15

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 16

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

Question # 17

Classical smog occurs in palces of

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

Ozone hole is maximum over

Question # 22

Photochemical smog is caused by

Question # 23

In incinerating the waste is burnt at

Question # 24

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

Question # 25

The pH range of the acid rain is

Question # 26

SO2Makes ______ acid rains

Question # 27

Acid rains are produced by

Question # 28

Chromium (VI) is highly toxic and can cause

Question # 29

Ecosystem is a smaller unit of

Question # 30

Eutrophication causes reduction in

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
2 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
3 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
4 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
5 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
6 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
7 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
8 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
9 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
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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