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

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 2

Ozone hole refers to

Question # 3

Increased asthmatic attacks in certain seasons are related to

Question # 4

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 5

The pH range of the acid rain is

Question # 6

Which is not a component of environment

Question # 7

Fungicides are the pesticides which

Question # 8

As it passes into food chain, the concentration of DDT

Question # 9

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 10

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

Question # 11

Photochemical smog is caused by

Question # 12

Chromium (VI) is highly toxic and can cause

Question # 13

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

Question # 14

Which is not the affect of polluted air on environment

Question # 15

Minamata disease is due to pollution of

Question # 16

Drawback DDT as presticide is

Question # 17

The normal amount of overhead ozone is about

Question # 18

Ecology is a science of environment and deals specially with

Question # 19

Which causes water pollution?

Question # 20

Increasing skin cancer and high mutation rate are due to

Question # 21

Result of ozone hole is

Question # 22

Chromium (VI) is highly toxic and can cause

Question # 23

Pick up the correct statement

Question # 24

Water is often treated with chlorine to

Question # 25

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

Question # 26

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

Question # 27

Which one of the following is not air pollutant gas

Question # 28

Water pollution is mainly due to

Question # 29

Biodegradable pollutant is

Question # 30

In the atmosphere, CO2is about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
2 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
3 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
4 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
5 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
6 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
7 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
8 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
9 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
10 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these

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