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

UV radiations bring about

Question # 2

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

Question # 3

Which factor is helping to reduce the environmental pollution

Question # 4

Chief air pollutant which is likely to deplete ozone layer

Question # 5

The region of earth capable of supporting life is

Question # 6

Most hazardous metal pollutant of automobile exhaust is

Question # 7

Which heavy metals do not have any safe limits

Question # 8

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

Question # 9

Carbon monoxide is pollutant as it

Question # 10

In incinerating the waste is burnt at

Question # 11

Photochemical smog is caused by

Question # 12

Eutrophication causes reduction in

Question # 13

Which gasses are produced from landfills

Question # 14

Burning of fossil fuels is the main source of pollution

Question # 15

Ecology is a science of environment and deals specially with

Question # 16

The % of CO2is the atmosphere is

Question # 17

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

Question # 18

Increasing skin cancer and high mutation rate are due to

Question # 19

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 20

Depletion of ozone layer is due to

Question # 21

Ecosystem is a smaller unit of

Question # 22

Which is not a method for solid waste management

Question # 23

Chromium (VI) is highly toxic and can cause

Question # 24

The amount of Si in the lithosphere is about

Question # 25

Pick up the correct statement

Question # 26

Swage water is purified by

Question # 27

Ozone depletion in stratosphere shall result in

Question # 28

Result of ozone hole is

Question # 29

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

Question # 30

Fungicides are the pesticides which

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
2 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
3 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
4 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
5 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
6 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
7 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
8 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
9 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
10 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU

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