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 is not the affect of polluted air on environment

Question # 2

A pollutant affects

Question # 3

Sulphur dioxide affects

Question # 4

Potable water is considered to be

Question # 5

Which one of the following is not air pollutant gas

Question # 6

Chloroflurocarbon releases a chemical harmful to ozone

Question # 7

Chief air pollutant which is likely to deplete ozone layer

Question # 8

The amount of Si in the lithosphere is about

Question # 9

The region of earth capable of supporting life is

Question # 10

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 11

The normal amount of overhead ozone is about

Question # 12

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

Question # 13

Biodegradable pollutant is

Question # 14

Drained sewage has B.O.D

Question # 15

Atomospheric pollutant is

Question # 16

SO2Makes ______ acid rains

Question # 17

Ultraviolet radiation from sun causes a reaction that produces

Question # 18

Spraying of DDT produces pollution of

Question # 19

Eutrophication causes reduction in

Question # 20

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

Question # 21

Which step is unnecessary for purification of water for drinking purposes

Question # 22

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

Question # 23

Chief source of water and soil pollution is

Question # 24

A single chlorine free radical can destroy how many ozone molecules

Question # 25

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

Question # 26

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 27

Ecology is a science of environment and deals specially with

Question # 28

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

Question # 29

Which causes water pollution?

Question # 30

Pick up the correct statement

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
2 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
3 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
4 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
5 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
6 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
7 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
8 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
9 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
10 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere

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