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

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Question # 1

Cyclone collector is used for minimizing

Question # 2

The film forming components of paints are

Question # 3

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

Question # 4

Biodegradable pollutant is

Question # 5

Soil remediation means

Question # 6

Depletion of ozone layer is due to

Question # 7

Pick up the correct statement

Question # 8

The largest item which is recycled is

Question # 9

The region of earth capable of supporting life is

Question # 10

Atmosphere of big/metropolitan cities is polluted most by

Question # 11

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 12

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

Question # 13

Ultraviolet radiation from sun causes a reaction that produces

Question # 14

Polycyolic aromatic hydrocarbons are taught to be

Question # 15

Which one of the following is not air pollutant gas

Question # 16

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

Question # 17

Which step is unnecessary for purification of water for drinking purposes

Question # 18

Increasing skin cancer and high mutation rate are due to

Question # 19

SO2and NO2produce pollution by increasing

Question # 20

Acid rain is due to increase in atmospheric concentration of

Question # 21

Which one is not a pollutant normally?

Question # 22

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

Question # 23

Which of the following is not an air

Question # 24

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

Question # 25

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

Question # 26

Sulphur dioxide affects

Question # 27

Result of ozone hole is

Question # 28

In the atmosphere, CO2is about

Question # 29

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

Question # 30

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
2 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
3 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
4 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
5 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
6 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
7 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
8 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
9 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
10 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000

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