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

A single chlorine free radical can destroy how many ozone molecules

Question # 2

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 3

Which is not a component of environment

Question # 4

The pH range of the acid rain is

Question # 5

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

Question # 6

Cyclone collector is used for minimizing

Question # 7

Water is often treated with chlorine to

Question # 8

Atmosphere of big/metropolitan cities is polluted most by

Question # 9

Ecosystem is a smaller unit of

Question # 10

Pick up the correct statement

Question # 11

Swage water is purified by

Question # 12

Exposure to CO results in

Question # 13

Which is not the affect of polluted air on environment

Question # 14

Which one is not a pollutant normally?

Question # 15

Fungicides are the pesticides which

Question # 16

In the atmosphere, CO2is about

Question # 17

Classical smog occurs in palces of

Question # 18

Which is not a method for solid waste management

Question # 19

Potable water is considered to be

Question # 20

The film forming components of paints are

Question # 21

Carbon monoxide is pollutant as it

Question # 22

The region of earth capable of supporting life is

Question # 23

Ultraviolet radiation from sun causes a reaction that produces

Question # 24

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

Question # 25

In Antarctica ozone depletion is due to the formation of following compound

Question # 26

Air pollution is not caused by

Question # 27

Result of ozone hole is

Question # 28

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

Question # 29

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

Question # 30

Which step is unnecessary for purification of water for drinking purposes

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
2 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
3 One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
4 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
5 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
6 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
7 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
8 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
9 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
10 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above

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