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

Environmental pollution affects

Question # 2

Carbon monoxide is pollutant as it

Question # 3

Which is not a method for solid waste management

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The region of earth capable of supporting life is

Question # 9

B.O.D is connected with

Question # 10

Which factor is helping to reduce the environmental pollution

Question # 11

As it passes into food chain, the concentration of DDT

Question # 12

Depletion of ozone layer is due to

Question # 13

Domestic waste mostly constitutes

Question # 14

Which of the following is not an air

Question # 15

Atmosphere of big/metropolitan cities is polluted most by

Question # 16

Which step is unnecessary for purification of water for drinking purposes

Question # 17

Oceans cove ______ percent of the surface of the earth

Question # 18

Result of ozone hole is

Question # 19

Increasing skin cancer and high mutation rate are due to

Question # 20

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

Question # 21

SO2and NO2produce pollution by increasing

Question # 22

Chromium (VI) is highly toxic and can cause

Question # 23

Cyclone collector is used for minimizing

Question # 24

In Antarctica ozone depletion is due to the formation of following compound

Question # 25

Acid rains are produced by

Question # 26

Ecosystem is a smaller unit of

Question # 27

Exposure to CO results in

Question # 28

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

Question # 29

BOD is

Question # 30

Sulphur dioxide affects

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
2 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
3 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
4 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
5 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
6 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
7 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
8 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
9 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
10 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa

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