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

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

Question # 2

Which gas is not a constituent of atmosphere

Question # 3

Which one is not a pollutant normally?

Question # 4

In the atmosphere, CO2is about

Question # 5

Chief air pollutant which is likely to deplete ozone layer

Question # 6

As it passes into food chain, the concentration of DDT

Question # 7

Ozone hole refers to

Question # 8

SO2and NO2produce pollution by increasing

Question # 9

Which is not the affect of polluted air on environment

Question # 10

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

Question # 11

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

Question # 12

BOD is

Question # 13

Ecology is a science of environment and deals specially with

Question # 14

Acid rains are produced by

Question # 15

Most hazardous metal pollutant of automobile exhaust is

Question # 16

Carbon monoxide is harmful to human beings as it

Question # 17

Carbon monoxide is pollutant as it

Question # 18

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

Question # 19

Acid rain is due to increase in atmospheric concentration of

Question # 20

Ultraviolet radiation from sun causes a reaction that produces

Question # 21

B.O.D is connected with

Question # 22

Increased asthmatic attacks in certain seasons are related to

Question # 23

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 24

Soil remediation means

Question # 25

Photochemical smog is caused by

Question # 26

SO2Makes ______ acid rains

Question # 27

Which is not a method for solid waste management

Question # 28

Water pollution is mainly due to

Question # 29

DDT is

Question # 30

Which gasses are produced from landfills

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
A. Iodine
B. Bromine
C. Lead
D. Carbon
2 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
3 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
4 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
5 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
6 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
7 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
8 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
9 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
10 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above

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