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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  • Time Allowed30

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ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

Ultraviolet radiation from sun causes a reaction that produces

Question # 2

Water is often treated with chlorine to

Question # 3

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 4

The largest item which is recycled is

Question # 5

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

Question # 6

A single chlorine free radical can destroy how many ozone molecules

Question # 7

Pollution is

Question # 8

The region of earth capable of supporting life is

Question # 9

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

Question # 10

Phosphate pollution is caused by

Question # 11

Chief source of water and soil pollution is

Question # 12

Sulphur dioxide affects

Question # 13

Ozone hole refers to

Question # 14

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

Question # 15

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

Question # 16

Ozone hole is maximum over

Question # 17

Biodegradable pollutant is

Question # 18

Which is not a component of environment

Question # 19

Carbon monoxide is harmful to human beings as it

Question # 20

Ecosystem is a smaller unit of

Question # 21

Which heavy metals do not have any safe limits

Question # 22

Spraying of DDT produces pollution of

Question # 23

What is the cause of water pollution

Question # 24

Classical smog occurs in palces of

Question # 25

Soil remediation means

Question # 26

SO2and NO2produce pollution by increasing

Question # 27

In the atmosphere, CO2is about

Question # 28

Depletion of ozone layer is due to

Question # 29

Increasing skin cancer and high mutation rate are due to

Question # 30

UV radiations bring about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
2 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
5 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
6 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
7 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
8 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
9 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
10 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury

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