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

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Question # 1

As it passes into food chain, the concentration of DDT

Question # 2

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 3

Which gasses are produced from landfills

Question # 4

Ozone depletion in stratosphere shall result in

Question # 5

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 6

Which is not the affect of polluted air on environment

Question # 7

Shahi Qilla may be destroyed by

Question # 8

The normal amount of overhead ozone is about

Question # 9

Increased asthmatic attacks in certain seasons are related to

Question # 10

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

Question # 11

Environmental pollution affects

Question # 12

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

Question # 13

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

Question # 14

What is the cause of water pollution

Question # 15

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 16

Which one is the most toxic?

Question # 17

Which step is unnecessary for purification of water for drinking purposes

Question # 18

Which one of the following is not air pollutant gas

Question # 19

Depletion of ozone layer is due to

Question # 20

Domestic waste mostly constitutes

Question # 21

SO2Makes ______ acid rains

Question # 22

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

Question # 23

Atmosphere of big/metropolitan cities is polluted most by

Question # 24

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

Question # 25

Chief air pollutant which is likely to deplete ozone layer

Question # 26

Exposure to CO results in

Question # 27

Which one is the major reason for pollution in high cities?

Question # 28

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 29

NO and NO2gases in atmosphere are represented by

Question # 30

Chromium (VI) is highly toxic and can cause

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
2 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
3 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
4 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
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 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
7 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
8 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
9 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

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