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

Classical smog occurs in palces of

Question # 2

Pollution is

Question # 3

In incinerating the waste is burnt at

Question # 4

Which gas is not a constituent of atmosphere

Question # 5

Which one of the following is not air pollutant gas

Question # 6

Shahi Qilla may be destroyed by

Question # 7

The region of earth capable of supporting life is

Question # 8

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

Question # 9

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

Question # 10

SO2Makes ______ acid rains

Question # 11

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

Question # 12

Cyclone collector is used for minimizing

Question # 13

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 14

SO2and NO2produce pollution by increasing

Question # 15

Atomospheric pollutant is

Question # 16

NO and NO2gases in atmosphere are represented by

Question # 17

Which step is unnecessary for purification of water for drinking purposes

Question # 18

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

Question # 19

Increasing skin cancer and high mutation rate are due to

Question # 20

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

Question # 21

DDT is

Question # 22

Which one is the most toxic?

Question # 23

Eutrophication causes reduction in

Question # 24

In the atmosphere, O2is about

Question # 25

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

Question # 26

What is the cause of water pollution

Question # 27

In the atmosphere, CO2is about

Question # 28

Air pollution is not caused by

Question # 29

Which causes water pollution?

Question # 30

Which is not the condition for the formation of smog

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
2 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
3 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
4 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
5 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
6 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
7 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
8 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
9 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
10 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons

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