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 factor is helping to reduce the environmental pollution

Question # 2

Drawback DDT as presticide is

Question # 3

Environmental pollution affects

Question # 4

Pick up the correct statement

Question # 5

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 6

A single chlorine free radical can destroy how many ozone molecules

Question # 7

Carbon monoxide is harmful to human beings as it

Question # 8

The film forming components of paints are

Question # 9

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

Question # 10

Atmosphere of big/metropolitan cities is polluted most by

Question # 11

UV radiations bring about

Question # 12

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 13

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

Question # 14

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 # 15

Shahi Qilla may be destroyed by

Question # 16

Which one is not a pollutant normally?

Question # 17

Swage water is purified by

Question # 18

The largest item which is recycled is

Question # 19

In incinerating the waste is burnt at

Question # 20

Depletion of ozone layer is due to

Question # 21

Ultraviolet radiation from sun causes a reaction that produces

Question # 22

Fungicides are the pesticides which

Question # 23

Which one of the following is not air pollutant gas

Question # 24

Increasing skin cancer and high mutation rate are due to

Question # 25

Most hazardous metal pollutant of automobile exhaust is

Question # 26

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 27

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

Question # 28

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

Question # 29

Minamata disease is due to pollution of

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
2 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
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 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
5 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
6 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
7 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
8 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution

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