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

Shahi Qilla may be destroyed by

Question # 2

The amount of Si in the lithosphere is about

Question # 3

BOD is

Question # 4

Which step is unnecessary for purification of water for drinking purposes

Question # 5

Burning of fossil fuels is the main source of pollution

Question # 6

Soil remediation means

Question # 7

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

Question # 8

Chromium (VI) is highly toxic and can cause

Question # 9

Soil salinity can be measured by

Question # 10

Cyclone collector is used for minimizing

Question # 11

SO2and NO2produce pollution by increasing

Question # 12

Oceans cove ______ percent of the surface of the earth

Question # 13

The film forming components of paints are

Question # 14

Exposure to CO results in

Question # 15

The normal amount of overhead ozone is about

Question # 16

A single chlorine free radical can destroy how many ozone molecules

Question # 17

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

Question # 18

In the atmosphere, O2is about

Question # 19

Ozone depletion in stratosphere shall result in

Question # 20

Photochemical smog is caused by

Question # 21

UV radiations bring about

Question # 22

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

Question # 23

SO2Makes ______ acid rains

Question # 24

NO and NO2gases in atmosphere are represented by

Question # 25

The largest item which is recycled is

Question # 26

The % of CO2is the atmosphere is

Question # 27

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

Question # 28

Chief air pollutant which is likely to deplete ozone layer

Question # 29

Depletion of ozone layer is due to

Question # 30

What is the cause of water pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
2 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
3 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
4 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
5 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
6 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
7 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
8 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
9 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
10 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+

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