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

Chief source of water and soil pollution is

Question # 2

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 3

Increased asthmatic attacks in certain seasons are related to

Question # 4

Which is not the affect of polluted air on environment

Question # 5

SO2Makes ______ acid rains

Question # 6

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

Question # 7

Potable water is considered to be

Question # 8

Air pollution is not caused by

Question # 9

Domestic waste mostly constitutes

Question # 10

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

Question # 11

Shahi Qilla may be destroyed by

Question # 12

Carbon monoxide is pollutant as it

Question # 13

Which is not a component of environment

Question # 14

Burning of fossil fuels is the main source of pollution

Question # 15

Depletion of ozone layer is due to

Question # 16

Ozone depletion in stratosphere shall result in

Question # 17

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 18

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

Question # 19

Acid rains are produced by

Question # 20

Carbon monoxide is harmful to human beings as it

Question # 21

In purification of potable water the coagulant used is

Question # 22

As it passes into food chain, the concentration of DDT

Question # 23

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

Question # 24

Which one is the most toxic?

Question # 25

When chlorofluoro carbon are subjected to U.V. they form

Question # 26

The pH range of the acid rain is

Question # 27

Ozone hole is maximum over

Question # 28

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

Question # 29

A pollutant affects

Question # 30

Result of ozone hole is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
2 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
3 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
4 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
5 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
6 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
7 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
8 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
9 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
10 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these

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