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

Soil remediation means

Question # 2

Cyclone collector is used for minimizing

Question # 3

The largest item which is recycled is

Question # 4

Acid rain is due to increase in atmospheric concentration of

Question # 5

The film forming components of paints are

Question # 6

Which of the following waste material is not recycled for use again

Question # 7

Sulphur dioxide affects

Question # 8

Which is not the condition for the formation of smog

Question # 9

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

Question # 10

Which is not a method for solid waste management

Question # 11

Ultraviolet radiation from sun causes a reaction that produces

Question # 12

Classical smog occurs in palces of

Question # 13

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

Question # 14

Oceans cove ______ percent of the surface of the earth

Question # 15

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

Question # 16

Chief air pollutant which is likely to deplete ozone layer

Question # 17

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

Question # 18

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 19

A pollutant affects

Question # 20

Fungicides are the pesticides which

Question # 21

Phosphate pollution is caused by

Question # 22

Chromium (VI) is highly toxic and can cause

Question # 23

As it passes into food chain, the concentration of DDT

Question # 24

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

Question # 25

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 26

Domestic waste mostly constitutes

Question # 27

Which gas is not a constituent of atmosphere

Question # 28

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

Question # 29

Chloroflurocarbon releases a chemical harmful to ozone

Question # 30

UV radiations bring about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
2 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
4 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
5 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
6 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
7 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
8 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
9 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
10 Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain

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