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

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

Question # 2

In the atmosphere, O2is about

Question # 3

Chief source of water and soil pollution is

Question # 4

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

Question # 5

Classical smog occurs in palces of

Question # 6

Acid rains are produced by

Question # 7

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

Question # 8

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

Question # 9

Which of the following waste material is not recycled for use again

Question # 10

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

Question # 11

Which one of the following is not air pollutant gas

Question # 12

As it passes into food chain, the concentration of DDT

Question # 13

Ozone hole refers to

Question # 14

Pollution is

Question # 15

Shahi Qilla may be destroyed by

Question # 16

Ozone depletion in stratosphere shall result in

Question # 17

In incinerating the waste is burnt at

Question # 18

Chloroflurocarbon releases a chemical harmful to ozone

Question # 19

A pollutant affects

Question # 20

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

Question # 21

The region of earth capable of supporting life is

Question # 22

Swage water is purified by

Question # 23

Carbon monoxide is harmful to human beings as it

Question # 24

Depletion of ozone layer is due to

Question # 25

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 26

Phosphate pollution is caused by

Question # 27

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

Question # 28

Atomospheric pollutant is

Question # 29

Ecology is a science of environment and deals specially with

Question # 30

Increased asthmatic attacks in certain seasons are related to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
3 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
4 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
5 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
6 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
7 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
8 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
9 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
10 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides

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