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

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

Question # 2

In the atmosphere, CO2is about

Question # 3

Ozone hole is maximum over

Question # 4

Carbon monoxide is harmful to human beings as it

Question # 5

Domestic waste mostly constitutes

Question # 6

Exposure to CO results in

Question # 7

Polycyolic aromatic hydrocarbons are taught to be

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Ozone depletion in stratosphere shall result in

Question # 12

Potable water is considered to be

Question # 13

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 14

Water pollution is mainly due to

Question # 15

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

Question # 16

Which of the following human activities are contaminating surface and ground waters

Question # 17

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

Question # 18

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

Question # 19

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 20

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

Question # 21

Oceans cove ______ percent of the surface of the earth

Question # 22

Eutrophication causes reduction in

Question # 23

Sulphur dioxide affects

Question # 24

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

Question # 25

Which factor is helping to reduce the environmental pollution

Question # 26

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

Question # 27

In incinerating the waste is burnt at

Question # 28

DDT is

Question # 29

Soil salinity can be measured by

Question # 30

Acid rain is due to increase in atmospheric concentration of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
2 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
5 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
6 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
7 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
8 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
9 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
10 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3

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