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

Air pollution is not caused by

Question # 2

As it passes into food chain, the concentration of DDT

Question # 3

SO2and NO2produce pollution by increasing

Question # 4

Carbon monoxide is pollutant as it

Question # 5

Minamata disease is due to pollution of

Question # 6

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 11

Which is not a component of environment

Question # 12

Exposure to CO results in

Question # 13

Drawback DDT as presticide is

Question # 14

Burning of fossil fuels is the main source of pollution

Question # 15

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

Question # 16

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 # 17

Pick up the correct statement

Question # 18

Soil salinity can be measured by

Question # 19

DDT is

Question # 20

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

Question # 21

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

Question # 22

Which of the following human activities are contaminating surface and ground waters

Question # 23

Which one is the most toxic?

Question # 24

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 25

Which causes water pollution?

Question # 26

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

Question # 27

Ozone hole is maximum over

Question # 28

Carbon monoxide is harmful to human beings as it

Question # 29

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 # 30

Swage water is purified by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
3 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
4 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
5 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
6 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
7 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
8 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
9 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
10 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air

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