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

Question # 2

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

Question # 3

SO2and NO2produce pollution by increasing

Question # 4

UV radiations bring about

Question # 5

Oceans cove ______ percent of the surface of the earth

Question # 6

Which heavy metals do not have any safe limits

Question # 7

Which factor is helping to reduce the environmental pollution

Question # 8

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

Question # 9

Which one is the major reason for pollution in high cities?

Question # 10

Pollution is

Question # 11

Ozone hole is maximum over

Question # 12

Acid rain is due to increase in atmospheric concentration of

Question # 13

Soil salinity can be measured by

Question # 14

DDT is

Question # 15

Increased asthmatic attacks in certain seasons are related to

Question # 16

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 # 17

Biodegradable pollutant is

Question # 18

The region of earth capable of supporting life is

Question # 19

Spraying of DDT produces pollution of

Question # 20

Water is often treated with chlorine to

Question # 21

In the atmosphere, CO2is about

Question # 22

Result of ozone hole is

Question # 23

Minamata disease is due to pollution of

Question # 24

Domestic waste mostly constitutes

Question # 25

Water pollution is mainly due to

Question # 26

Which one is not a pollutant normally?

Question # 27

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

Question # 28

Ozone hole refers to

Question # 29

The largest item which is recycled is

Question # 30

Which is not the affect of polluted air on environment

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
2 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
3 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
4 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
5 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
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 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
8 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
9 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
10 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere

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