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

Ozone hole refers to

Question # 2

Spraying of DDT produces pollution of

Question # 3

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 4

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

Question # 5

Drawback DDT as presticide is

Question # 6

Acid rain is due to increase in atmospheric concentration of

Question # 7

Which step is unnecessary for purification of water for drinking purposes

Question # 8

Exposure to CO results in

Question # 9

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

Question # 10

The amount of oxygen in the lithosphere is about

Question # 11

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

Question # 12

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 13

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 14

Atomospheric pollutant is

Question # 15

In purification of potable water the coagulant used is

Question # 16

Environmental pollution affects

Question # 17

The film forming components of paints are

Question # 18

SO2Makes ______ acid rains

Question # 19

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

Question # 20

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

Question # 21

The normal amount of overhead ozone is about

Question # 22

Which one of the following is not air pollutant gas

Question # 23

Acid rains are produced by

Question # 24

Ozone depletion in stratosphere shall result in

Question # 25

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

Question # 26

Cyclone collector is used for minimizing

Question # 27

Polycyolic aromatic hydrocarbons are taught to be

Question # 28

The pH range of the acid rain is

Question # 29

Chief source of water and soil pollution is

Question # 30

Which factor is helping to reduce the environmental pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
4 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
5 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
6 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
7 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
8 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
9 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
10 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters

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