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

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

Question # 2

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 3

A single chlorine free radical can destroy how many ozone molecules

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

Drawback DDT as presticide is

Question # 8

Carbon monoxide is harmful to human beings as it

Question # 9

Water is often treated with chlorine to

Question # 10

NO and NO2gases in atmosphere are represented by

Question # 11

Depletion of ozone layer is due to

Question # 12

Drained sewage has B.O.D

Question # 13

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

Question # 14

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

Question # 15

Pick up the correct statement

Question # 16

Which is not a method for solid waste management

Question # 17

In the atmosphere, O2is about

Question # 18

Fungicides are the pesticides which

Question # 19

B.O.D is connected with

Question # 20

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

Question # 21

In the atmosphere, CO2is about

Question # 22

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 23

Increasing skin cancer and high mutation rate are due to

Question # 24

Classical smog occurs in palces of

Question # 25

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

Question # 26

Burning of fossil fuels is the main source of pollution

Question # 27

Which one of the following is not air pollutant gas

Question # 28

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

Question # 29

Ecology is a science of environment and deals specially with

Question # 30

Domestic waste mostly constitutes

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
2 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
3 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
4 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
5 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
6 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
7 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
8 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
9 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
10 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above

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