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

Air pollution is not caused by

Question # 2

Biodegradable pollutant is

Question # 3

Which step is unnecessary for purification of water for drinking purposes

Question # 4

Sulphur dioxide affects

Question # 5

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

Question # 6

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 7

Ecology is a science of environment and deals specially with

Question # 8

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 9

Polycyolic aromatic hydrocarbons are taught to be

Question # 10

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

Question # 11

Domestic waste mostly constitutes

Question # 12

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 13

Which factor is helping to reduce the environmental pollution

Question # 14

Which of the following is not an air

Question # 15

Minamata disease is due to pollution of

Question # 16

Eutrophication causes reduction in

Question # 17

SO2and NO2produce pollution by increasing

Question # 18

Burning of fossil fuels is the main source of pollution

Question # 19

Water pollution is mainly due to

Question # 20

The normal amount of overhead ozone is about

Question # 21

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

Question # 22

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

Question # 23

The pH range of the acid rain is

Question # 24

Chromium (VI) is highly toxic and can cause

Question # 25

Classical smog occurs in palces of

Question # 26

Chief air pollutant which is likely to deplete ozone layer

Question # 27

Which gasses are produced from landfills

Question # 28

Environmental pollution affects

Question # 29

Drained sewage has B.O.D

Question # 30

Atmosphere of big/metropolitan cities is polluted most by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
3 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
4 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
5 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
6 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
7 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
8 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
9 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
10 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus

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