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

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

Question # 2

Which causes water pollution?

Question # 3

Atomospheric pollutant is

Question # 4

Spraying of DDT produces pollution of

Question # 5

Carbon monoxide is pollutant as it

Question # 6

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 7

Biodegradable pollutant is

Question # 8

Which factor is helping to reduce the environmental pollution

Question # 9

Oceans cove ______ percent of the surface of the earth

Question # 10

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

Question # 11

DDT is

Question # 12

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

Question # 13

Domestic waste mostly constitutes

Question # 14

The film forming components of paints are

Question # 15

Chloroflurocarbon releases a chemical harmful to ozone

Question # 16

UV radiations bring about

Question # 17

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 18

Shahi Qilla may be destroyed by

Question # 19

Result of ozone hole is

Question # 20

Cyclone collector is used for minimizing

Question # 21

SO2and NO2produce pollution by increasing

Question # 22

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

Question # 23

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

Question # 24

Acid rains are produced by

Question # 25

The largest item which is recycled is

Question # 26

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

Question # 27

What is the cause of water pollution

Question # 28

Carbon monoxide is harmful to human beings as it

Question # 29

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

Question # 30

Most hazardous metal pollutant of automobile exhaust is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
2 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
3 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
4 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
5 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
6 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
7 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
8 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
9 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
10 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

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