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

Air pollution is not caused by

Question # 2

Which step is unnecessary for purification of water for drinking purposes

Question # 3

In incinerating the waste is burnt at

Question # 4

Pick up the correct statement

Question # 5

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 # 6

Which one of the following is not air pollutant gas

Question # 7

Photochemical smog is caused by

Question # 8

BOD is

Question # 9

SO2and NO2produce pollution by increasing

Question # 10

The amount of Si in the lithosphere is about

Question # 11

Soil remediation means

Question # 12

Classical smog occurs in palces of

Question # 13

Burning of fossil fuels is the main source of pollution

Question # 14

The film forming components of paints are

Question # 15

Acid rains are produced by

Question # 16

Increased asthmatic attacks in certain seasons are related to

Question # 17

Depletion of ozone layer is due to

Question # 18

Spraying of DDT produces pollution of

Question # 19

Soil salinity can be measured by

Question # 20

The region of earth capable of supporting life is

Question # 21

Which one is not a pollutant normally?

Question # 22

Ecosystem is a smaller unit of

Question # 23

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

Question # 24

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 25

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 26

Water is often treated with chlorine to

Question # 27

Swage water is purified by

Question # 28

Ecology is a science of environment and deals specially with

Question # 29

Mottling of teeth is due to presence of an element in drinking water

Question # 30

Which causes water pollution?

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
2 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
3 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
4 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
5 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
6 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
7 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
8 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
9 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
10 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution

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