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

B.O.D is connected with

Question # 2

The largest item which is recycled is

Question # 3

Which is not the condition for the formation of smog

Question # 4

The region of earth capable of supporting life is

Question # 5

Fungicides are the pesticides which

Question # 6

The normal amount of overhead ozone is about

Question # 7

Which gasses are produced from landfills

Question # 8

Result of ozone hole is

Question # 9

Sulphur dioxide affects

Question # 10

Shahi Qilla may be destroyed by

Question # 11

Which is not a method for solid waste management

Question # 12

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 13

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 14

Air pollution is not caused by

Question # 15

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

Question # 16

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

Question # 17

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 18

Water pollution is mainly due to

Question # 19

Which step is unnecessary for purification of water for drinking purposes

Question # 20

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 21

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

Question # 22

Ultraviolet radiation from sun causes a reaction that produces

Question # 23

Depletion of ozone layer is due to

Question # 24

Water which his considered to be safe for human consumption is known as

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Which one of the following is not air pollutant gas

Question # 29

Classical smog occurs in palces of

Question # 30

Carbon monoxide is pollutant as it

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
2 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
3 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
4 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
5 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
6 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
7 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
8 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
9 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
10 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere

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