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

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

Question # 2

Which is not a component of environment

Question # 3

Which step is unnecessary for purification of water for drinking purposes

Question # 4

Spraying of DDT produces pollution of

Question # 5

Water pollution is mainly due to

Question # 6

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

Question # 7

Most hazardous metal pollutant of automobile exhaust is

Question # 8

SO2and NO2produce pollution by increasing

Question # 9

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

Question # 10

Ozone hole refers to

Question # 11

Classical smog occurs in palces of

Question # 12

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

Question # 13

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

Question # 14

Which gasses are produced from landfills

Question # 15

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

Question # 16

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

Question # 17

Minamata disease is due to pollution of

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

Which is not a method for solid waste management

Question # 20

Depletion of ozone layer is due to

Question # 21

In purification of potable water the coagulant used is

Question # 22

Ultraviolet radiation from sun causes a reaction that produces

Question # 23

Soil salinity can be measured by

Question # 24

What is the cause of water pollution

Question # 25

In the atmosphere, O2is about

Question # 26

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

Question # 27

SO2Makes ______ acid rains

Question # 28

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 29

Chromium (VI) is highly toxic and can cause

Question # 30

Burning of fossil fuels is the main source of pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
2 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
3 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
4 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
5 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
6 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
7 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
8 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
9 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
10 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C

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