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

Classical smog occurs in palces of

Question # 2

The region of earth capable of supporting life is

Question # 3

In the atmosphere, O2is about

Question # 4

Which gas is not a constituent of atmosphere

Question # 5

Biodegradable pollutant is

Question # 6

Pick up the correct statement

Question # 7

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

Question # 8

In incinerating the waste is burnt at

Question # 9

Ozone hole refers to

Question # 10

The film forming components of paints are

Question # 11

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

Question # 12

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

Question # 13

Eutrophication causes reduction in

Question # 14

Oceans cove ______ percent of the surface of the earth

Question # 15

Acid rains are produced by

Question # 16

Which one is not a pollutant normally?

Question # 17

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 18

Soil salinity can be measured by

Question # 19

Potable water is considered to be

Question # 20

Ultraviolet radiation from sun causes a reaction that produces

Question # 21

What is the cause of water pollution

Question # 22

B.O.D is connected with

Question # 23

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

Question # 24

Result of ozone hole is

Question # 25

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 26

The % of CO2is the atmosphere is

Question # 27

Increasing skin cancer and high mutation rate are due to

Question # 28

Which factor is helping to reduce the environmental pollution

Question # 29

Chromium (VI) is highly toxic and can cause

Question # 30

Ozone hole is maximum over

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
2 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
3 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
4 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
5 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
6 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
7 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
8 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
9 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
10 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa

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