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

Atmosphere of big/metropolitan cities is polluted most by

Question # 2

Spraying of DDT produces pollution of

Question # 3

Which gas is not a constituent of atmosphere

Question # 4

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

Question # 5

Pollution is

Question # 6

The % of CO2is the atmosphere is

Question # 7

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 8

Swage water is purified by

Question # 9

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 10

Chromium (VI) is highly toxic and can cause

Question # 11

Water pollution is mainly due to

Question # 12

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

Question # 13

Which is not a method for solid waste management

Question # 14

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

Question # 15

Which is not the affect of polluted air on environment

Question # 16

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

Question # 17

Air pollution is not caused by

Question # 18

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 19

Acid rain is due to increase in atmospheric concentration of

Question # 20

What is the cause of water pollution

Question # 21

Ozone hole is maximum over

Question # 22

Pick up the correct statement

Question # 23

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

Question # 24

The pH range of the acid rain is

Question # 25

The normal amount of overhead ozone is about

Question # 26

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

Question # 27

Depletion of ozone layer is due to

Question # 28

Carbon monoxide is harmful to human beings as it

Question # 29

Most hazardous metal pollutant of automobile exhaust is

Question # 30

Drawback DDT as presticide is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
2 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
3 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
4 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
5 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
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 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
8 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
9 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
10 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide

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