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

Exposure to CO results in

Question # 2

Atomospheric pollutant is

Question # 3

UV radiations bring about

Question # 4

The largest item which is recycled is

Question # 5

Which is not the condition for the formation of smog

Question # 6

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 7

Air pollution is not caused by

Question # 8

Eutrophication causes reduction in

Question # 9

Increased asthmatic attacks in certain seasons are related to

Question # 10

Ultraviolet radiation from sun causes a reaction that produces

Question # 11

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

Question # 12

In incinerating the waste is burnt at

Question # 13

DDT is

Question # 14

Result of ozone hole is

Question # 15

The % of CO2is the atmosphere is

Question # 16

Ozone hole is maximum over

Question # 17

A pollutant affects

Question # 18

Biodegradable pollutant is

Question # 19

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 20

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

Question # 21

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

Question # 22

The amount of oxygen in the lithosphere is about

Question # 23

Which one is the most toxic?

Question # 24

The region of earth capable of supporting life is

Question # 25

Acid rains are produced by

Question # 26

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

Question # 27

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

Question # 28

Water is often treated with chlorine to

Question # 29

Ecosystem is a smaller unit of

Question # 30

Drawback DDT as presticide is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
2 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
3 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
4 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
5 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
6 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
7 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
8 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
9 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
10 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers

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