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

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

Question # 2

When chlorofluoro carbon are subjected to U.V. they form

Question # 3

Air pollution is not caused by

Question # 4

As it passes into food chain, the concentration of DDT

Question # 5

Oceans cove ______ percent of the surface of the earth

Question # 6

SO2and NO2produce pollution by increasing

Question # 7

Classical smog occurs in palces of

Question # 8

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 9

Eutrophication causes reduction in

Question # 10

Fungicides are the pesticides which

Question # 11

Cyclone collector is used for minimizing

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

Soil remediation means

Question # 14

BOD is

Question # 15

The normal amount of overhead ozone is about

Question # 16

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

Question # 17

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

Question # 18

What is the cause of water pollution

Question # 19

The pH range of the acid rain is

Question # 20

Biodegradable pollutant is

Question # 21

In incinerating the waste is burnt at

Question # 22

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

Question # 23

Pollution is

Question # 24

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

Question # 25

Ecosystem is a smaller unit of

Question # 26

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

Question # 27

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 28

Shahi Qilla may be destroyed by

Question # 29

In purification of potable water the coagulant used is

Question # 30

Acid rains are produced by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
2 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
3 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
4 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
5 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
6 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
7 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
8 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
9 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
10 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+

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