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

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 2

Which step is unnecessary for purification of water for drinking purposes

Question # 3

SO2and NO2produce pollution by increasing

Question # 4

Polycyolic aromatic hydrocarbons are taught to be

Question # 5

The % of CO2is the atmosphere is

Question # 6

Water is often treated with chlorine to

Question # 7

Potable water is considered to be

Question # 8

The region of earth capable of supporting life is

Question # 9

Soil remediation means

Question # 10

Which gasses are produced from landfills

Question # 11

Domestic waste mostly constitutes

Question # 12

Which heavy metals do not have any safe limits

Question # 13

Carbon monoxide is pollutant as it

Question # 14

Chief source of water and soil pollution is

Question # 15

Which is not a component of environment

Question # 16

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

Question # 17

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

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

Pollution is

Question # 20

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

Question # 21

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

Question # 22

Oceans cove ______ percent of the surface of the earth

Question # 23

In incinerating the waste is burnt at

Question # 24

Ozone depletion in stratosphere shall result in

Question # 25

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

Question # 26

Classical smog occurs in palces of

Question # 27

Which gas is not a constituent of atmosphere

Question # 28

Water which his considered to be safe for human consumption is known as

Question # 29

Which of the following is not an air

Question # 30

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
2 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
3 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
4 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
5 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
6 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
7 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
8 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
9 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
10 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

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