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

The amount of oxygen in the lithosphere is about

Question # 2

UV radiations bring about

Question # 3

In purification of potable water the coagulant used is

Question # 4

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

Question # 5

Carbon monoxide is pollutant as it

Question # 6

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

Question # 7

Pick up the correct statement

Question # 8

Air pollution is not caused by

Question # 9

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

Question # 10

Spraying of DDT produces pollution of

Question # 11

Oceans cove ______ percent of the surface of the earth

Question # 12

Sulphur dioxide affects

Question # 13

Increased asthmatic attacks in certain seasons are related to

Question # 14

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 # 15

Swage water is purified by

Question # 16

Minamata disease is due to pollution of

Question # 17

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

Question # 18

Domestic waste mostly constitutes

Question # 19

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 20

Which one is not a pollutant normally?

Question # 21

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

Question # 22

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

Question # 23

DDT is

Question # 24

Chromium (VI) is highly toxic and can cause

Question # 25

A single chlorine free radical can destroy how many ozone molecules

Question # 26

Fungicides are the pesticides which

Question # 27

Drawback DDT as presticide is

Question # 28

Which gas is not a constituent of atmosphere

Question # 29

Soil salinity can be measured by

Question # 30

Burning of fossil fuels is the main source of pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
2 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
3 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
4 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
5 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
6 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
7 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
8 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
9 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
10 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury

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