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

Eutrophication causes reduction in

Question # 2

Potable water is considered to be

Question # 3

In purification of potable water the coagulant used is

Question # 4

Which factor is helping to reduce the environmental pollution

Question # 5

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 6

Photochemical smog is caused by

Question # 7

Ultraviolet radiation from sun causes a reaction that produces

Question # 8

Acid rain is due to increase in atmospheric concentration of

Question # 9

In incinerating the waste is burnt at

Question # 10

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

Question # 11

The normal amount of overhead ozone is about

Question # 12

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

Question # 13

SO2and NO2produce pollution by increasing

Question # 14

Atmosphere of big/metropolitan cities is polluted most by

Question # 15

Which gas is not a constituent of atmosphere

Question # 16

Chloroflurocarbon releases a chemical harmful to ozone

Question # 17

Atomospheric pollutant is

Question # 18

Air pollution is not caused by

Question # 19

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

Question # 20

Increasing skin cancer and high mutation rate are due to

Question # 21

NO and NO2gases in atmosphere are represented by

Question # 22

Minamata disease is due to pollution of

Question # 23

Which is not a component of environment

Question # 24

Classical smog occurs in palces of

Question # 25

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

Question # 26

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 27

Which is not the condition for the formation of smog

Question # 28

DDT is

Question # 29

Which gasses are produced from landfills

Question # 30

Phosphate pollution is caused by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
2 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
3 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
4 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
5 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
6 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
7 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
8 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
9 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
10 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

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