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

Increasing skin cancer and high mutation rate are due to

Question # 2

Ecology is a science of environment and deals specially with

Question # 3

Ozone hole is maximum over

Question # 4

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

Question # 5

BOD is

Question # 6

The normal amount of overhead ozone is about

Question # 7

Ozone depletion in stratosphere shall result in

Question # 8

Acid rain is due to increase in atmospheric concentration of

Question # 9

Atomospheric pollutant is

Question # 10

Which gasses are produced from landfills

Question # 11

Ultraviolet radiation from sun causes a reaction that produces

Question # 12

Soil salinity can be measured by

Question # 13

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

Question # 14

Which is not the condition for the formation of smog

Question # 15

Shahi Qilla may be destroyed by

Question # 16

Which heavy metals do not have any safe limits

Question # 17

Increased asthmatic attacks in certain seasons are related to

Question # 18

Which is not the affect of polluted air on environment

Question # 19

Carbon monoxide is harmful to human beings as it

Question # 20

Result of ozone hole is

Question # 21

Ozone hole refers to

Question # 22

The pH range of the acid rain is

Question # 23

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

Question # 24

UV radiations bring about

Question # 25

The amount of oxygen in the lithosphere is about

Question # 26

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

Question # 27

Ecosystem is a smaller unit of

Question # 28

Chromium (VI) is highly toxic and can cause

Question # 29

Drained sewage has B.O.D

Question # 30

Classical smog occurs in palces of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
2 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
3 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
4 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
5 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
6 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
7 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
8 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
9 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
10 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

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