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 is not the condition for the formation of smog

Question # 2

Ozone hole is maximum over

Question # 3

Air pollution is not caused by

Question # 4

The largest item which is recycled is

Question # 5

Most hazardous metal pollutant of automobile exhaust is

Question # 6

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

Question # 7

A single chlorine free radical can destroy how many ozone molecules

Question # 8

Which gas is not a constituent of atmosphere

Question # 9

Pollution is

Question # 10

Minamata disease is due to pollution of

Question # 11

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

Question # 12

Chloroflurocarbon releases a chemical harmful to ozone

Question # 13

Photochemical smog is caused by

Question # 14

Exposure to CO results in

Question # 15

Chromium (VI) is highly toxic and can cause

Question # 16

Classical smog occurs in palces of

Question # 17

NO and NO2gases in atmosphere are represented by

Question # 18

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

Question # 19

Chief air pollutant which is likely to deplete ozone layer

Question # 20

Sulphur dioxide affects

Question # 21

Carbon monoxide is pollutant as it

Question # 22

Pick up the correct statement

Question # 23

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

Question # 24

Drawback DDT as presticide is

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

BOD is

Question # 27

What is the cause of water pollution

Question # 28

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

Question # 29

Increased asthmatic attacks in certain seasons are related to

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 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
2 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
3 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
4 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
5 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
6 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
7 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
8 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
9 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
10 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

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