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

The normal amount of overhead ozone is about

Question # 2

Environmental pollution affects

Question # 3

Shahi Qilla may be destroyed by

Question # 4

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 # 5

SO2and NO2produce pollution by increasing

Question # 6

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

Question # 7

DDT is

Question # 8

The region of earth capable of supporting life is

Question # 9

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

Question # 10

Pick up the correct statement

Question # 11

Which factor is helping to reduce the environmental pollution

Question # 12

The amount of oxygen in the lithosphere is about

Question # 13

Chief air pollutant which is likely to deplete ozone layer

Question # 14

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

Question # 15

Photochemical smog is caused by

Question # 16

In the atmosphere, O2is about

Question # 17

Which step is unnecessary for purification of water for drinking purposes

Question # 18

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 19

A pollutant affects

Question # 20

What is the cause of water pollution

Question # 21

Swage water is purified by

Question # 22

As it passes into food chain, the concentration of DDT

Question # 23

Which is not the affect of polluted air on environment

Question # 24

In purification of potable water the coagulant used is

Question # 25

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

Question # 26

Increased asthmatic attacks in certain seasons are related to

Question # 27

Which one is the most toxic?

Question # 28

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 29

B.O.D is connected with

Question # 30

Ozone hole is maximum over

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
2 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
3 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
4 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
5 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
6 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
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
7 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
8 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
9 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
10 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97

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