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

Which is not the affect of polluted air on environment

Question # 2

What is the cause of water pollution

Question # 3

Drawback DDT as presticide is

Question # 4

The region of earth capable of supporting life is

Question # 5

Photochemical smog is caused by

Question # 6

Increasing skin cancer and high mutation rate are due to

Question # 7

Biodegradable pollutant is

Question # 8

Chromium (VI) is highly toxic and can cause

Question # 9

Environmental pollution affects

Question # 10

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

Question # 11

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

Question # 12

Carbon monoxide is harmful to human beings as it

Question # 13

Chief air pollutant which is likely to deplete ozone layer

Question # 14

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

Question # 15

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

Question # 16

The % of CO2is the atmosphere is

Question # 17

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

Question # 18

Chloroflurocarbon releases a chemical harmful to ozone

Question # 19

Which is not the condition for the formation of smog

Question # 20

Water pollution is mainly due to

Question # 21

Water is often treated with chlorine to

Question # 22

Spraying of DDT produces pollution of

Question # 23

Drained sewage has B.O.D

Question # 24

Which one is the major reason for pollution in high cities?

Question # 25

Cyclone collector is used for minimizing

Question # 26

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

Question # 27

DDT is

Question # 28

Ozone hole refers to

Question # 29

As it passes into food chain, the concentration of DDT

Question # 30

Pollution is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
2 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
3 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
4 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
5 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
6 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
7 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
8 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
9 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain

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