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

Acid rain is due to increase in atmospheric concentration of

Question # 3

Which is not the affect of polluted air on environment

Question # 4

In incinerating the waste is burnt at

Question # 5

The normal amount of overhead ozone is about

Question # 6

In the atmosphere, CO2is about

Question # 7

Photochemical smog is caused by

Question # 8

Drawback DDT as presticide is

Question # 9

The region of earth capable of supporting life is

Question # 10

The pH range of the acid rain is

Question # 11

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

Question # 12

In the atmosphere, O2is about

Question # 13

Soil salinity can be measured by

Question # 14

Chloroflurocarbon releases a chemical harmful to ozone

Question # 15

Which step is unnecessary for purification of water for drinking purposes

Question # 16

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

Question # 17

Carbon monoxide is pollutant as it

Question # 18

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

Question # 19

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

Question # 20

Chief air pollutant which is likely to deplete ozone layer

Question # 21

Which is not the condition for the formation of smog

Question # 22

SO2and NO2produce pollution by increasing

Question # 23

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 # 24

A pollutant affects

Question # 25

NO and NO2gases in atmosphere are represented by

Question # 26

Which is not a method for solid waste management

Question # 27

Sulphur dioxide affects

Question # 28

Ecosystem is a smaller unit of

Question # 29

Eutrophication causes reduction in

Question # 30

Swage water is purified by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
2 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
3 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
4 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
5 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
6 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
7 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
8 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants

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