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

Burning of fossil fuels is the main source of pollution

Question # 2

Atmosphere of big/metropolitan cities is polluted most by

Question # 3

Atomospheric pollutant is

Question # 4

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 5

NO and NO2gases in atmosphere are represented by

Question # 6

Chromium (VI) is highly toxic and can cause

Question # 7

Which one is not a pollutant normally?

Question # 8

Soil remediation means

Question # 9

The largest item which is recycled is

Question # 10

Exposure to CO results in

Question # 11

Ecosystem is a smaller unit of

Question # 12

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

Question # 13

Soil salinity can be measured by

Question # 14

What is the cause of water pollution

Question # 15

Which is not the affect of polluted air on environment

Question # 16

Domestic waste mostly constitutes

Question # 17

Which is not the condition for the formation of smog

Question # 18

In the atmosphere, O2is about

Question # 19

Acid rains are produced by

Question # 20

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

Question # 21

SO2Makes ______ acid rains

Question # 22

Ultraviolet radiation from sun causes a reaction that produces

Question # 23

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 24

Classical smog occurs in palces of

Question # 25

Ozone depletion in stratosphere shall result in

Question # 26

Which one is the most toxic?

Question # 27

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

Question # 28

Which causes water pollution?

Question # 29

Eutrophication causes reduction in

Question # 30

Sulphur dioxide affects

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
2 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
3 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
4 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
5 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
6 Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
7 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
8 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
9 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
10 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%

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