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

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

Question # 2

Domestic waste mostly constitutes

Question # 3

Exposure to CO results in

Question # 4

Spraying of DDT produces pollution of

Question # 5

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

Question # 6

Soil salinity can be measured by

Question # 7

The % of CO2is the atmosphere is

Question # 8

Phosphate pollution is caused by

Question # 9

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

Question # 10

SO2and NO2produce pollution by increasing

Question # 11

BOD is

Question # 12

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

Question # 13

Water pollution is mainly due to

Question # 14

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

Question # 15

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 16

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 17

Which gasses are produced from landfills

Question # 18

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

Question # 19

Acid rain is due to increase in atmospheric concentration of

Question # 20

Soil remediation means

Question # 21

Photochemical smog is caused by

Question # 22

Atomospheric pollutant is

Question # 23

What is the cause of water pollution

Question # 24

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

Question # 25

In the atmosphere, O2is about

Question # 26

Biodegradable pollutant is

Question # 27

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 28

Drained sewage has B.O.D

Question # 29

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

Question # 30

Chloroflurocarbon releases a chemical harmful to ozone

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
2 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
3 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
4 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
5 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
6 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
7 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
8 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
9 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
10 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these

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