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

Cyclone collector is used for minimizing

Question # 2

Burning of fossil fuels is the main source of pollution

Question # 3

In incinerating the waste is burnt at

Question # 4

Which one is the most toxic?

Question # 5

Ultraviolet radiation from sun causes a reaction that produces

Question # 6

Increased asthmatic attacks in certain seasons are related to

Question # 7

Swage water is purified by

Question # 8

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 9

The amount of oxygen in the lithosphere is about

Question # 10

Which is not the condition for the formation of smog

Question # 11

Carbon monoxide is pollutant as it

Question # 12

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

Question # 13

Drained sewage has B.O.D

Question # 14

SO2Makes ______ acid rains

Question # 15

Ozone depletion in stratosphere shall result in

Question # 16

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

Question # 17

Shahi Qilla may be destroyed by

Question # 18

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 19

Atmosphere of big/metropolitan cities is polluted most by

Question # 20

Which factor is helping to reduce the environmental pollution

Question # 21

Chromium (VI) is highly toxic and can cause

Question # 22

Ecosystem is a smaller unit of

Question # 23

DDT is

Question # 24

Which causes water pollution?

Question # 25

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

Question # 26

The largest item which is recycled is

Question # 27

Sulphur dioxide affects

Question # 28

Classical smog occurs in palces of

Question # 29

Which is not a component of environment

Question # 30

Ozone hole refers to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
2 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
3 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
4 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
5 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
6 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
7 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
8 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
9 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
10 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000

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