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

Depletion of ozone layer is due to

Question # 2

Soil salinity can be measured by

Question # 3

Environmental pollution affects

Question # 4

The largest item which is recycled is

Question # 5

Which heavy metals do not have any safe limits

Question # 6

Ozone hole refers to

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

Domestic waste mostly constitutes

Question # 10

Ozone depletion in stratosphere shall result in

Question # 11

Atmosphere of big/metropolitan cities is polluted most by

Question # 12

In purification of potable water the coagulant used is

Question # 13

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

Question # 14

The amount of oxygen in the lithosphere is about

Question # 15

Eutrophication causes reduction in

Question # 16

Which is not the condition for the formation of smog

Question # 17

Increased asthmatic attacks in certain seasons are related to

Question # 18

Which of the following is not an air

Question # 19

Water pollution is mainly due to

Question # 20

SO2Makes ______ acid rains

Question # 21

Which gas is not a constituent of atmosphere

Question # 22

Soil remediation means

Question # 23

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 24

Carbon monoxide is harmful to human beings as it

Question # 25

Fungicides are the pesticides which

Question # 26

Which factor is helping to reduce the environmental pollution

Question # 27

Pollution is

Question # 28

Chromium (VI) is highly toxic and can cause

Question # 29

Ozone hole is maximum over

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
2 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
3 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
4 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
5 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
6 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
7 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
8 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
9 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
10 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles

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