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

Which one is not a pollutant normally?

Question # 2

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

Question # 3

Fungicides are the pesticides which

Question # 4

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

Question # 5

Which one of the following is not air pollutant gas

Question # 6

SO2and NO2produce pollution by increasing

Question # 7

Polycyolic aromatic hydrocarbons are taught to be

Question # 8

Water pollution is mainly due to

Question # 9

Ozone depletion in stratosphere shall result in

Question # 10

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

Question # 11

Classical smog occurs in palces of

Question # 12

Atomospheric pollutant is

Question # 13

NO and NO2gases in atmosphere are represented by

Question # 14

In the atmosphere, CO2is about

Question # 15

Chief source of water and soil pollution is

Question # 16

Which one is the most toxic?

Question # 17

What is the cause of water pollution

Question # 18

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

Question # 19

Spraying of DDT produces pollution of

Question # 20

Ozone hole refers to

Question # 21

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

Question # 22

In the atmosphere, O2is about

Question # 23

The film forming components of paints are

Question # 24

Which factor is helping to reduce the environmental pollution

Question # 25

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 26

Ecosystem is a smaller unit of

Question # 27

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

Question # 28

Potable water is considered to be

Question # 29

Which gas is not a constituent of atmosphere

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
2 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
3 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
4 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
5 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
6 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
7 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
8 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
9 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
10 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above

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