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

Atmosphere of big/metropolitan cities is polluted most by

Question # 2

DDT is

Question # 3

In the atmosphere, CO2is about

Question # 4

Carbon monoxide is pollutant as it

Question # 5

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 # 6

Pick up the correct statement

Question # 7

Increased asthmatic attacks in certain seasons are related to

Question # 8

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

Question # 9

Ozone hole is maximum over

Question # 10

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 11

Increasing skin cancer and high mutation rate are due to

Question # 12

Environmental pollution affects

Question # 13

SO2and NO2produce pollution by increasing

Question # 14

Mottling of teeth is due to presence of an element in drinking water

Question # 15

In incinerating the waste is burnt at

Question # 16

Spraying of DDT produces pollution of

Question # 17

Carbon monoxide is harmful to human beings as it

Question # 18

Chief source of water and soil pollution is

Question # 19

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

Question # 20

Depletion of ozone layer is due to

Question # 21

Atomospheric pollutant is

Question # 22

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

Question # 23

A pollutant affects

Question # 24

Chief air pollutant which is likely to deplete ozone layer

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

What is the cause of water pollution

Question # 27

Cyclone collector is used for minimizing

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

Shahi Qilla may be destroyed by

Question # 30

Which gas is not a constituent of atmosphere

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
2 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
3 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
4 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
5 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
6 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
7 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
8 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
9 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
10 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5

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