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

Chloroflurocarbon releases a chemical harmful to ozone

Question # 2

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

Question # 3

Ozone hole is maximum over

Question # 4

Sulphur dioxide affects

Question # 5

Drawback DDT as presticide is

Question # 6

Which one is not a pollutant normally?

Question # 7

Pick up the correct statement

Question # 8

Potable water is considered to be

Question # 9

Which factor is helping to reduce the environmental pollution

Question # 10

Eutrophication causes reduction in

Question # 11

Shahi Qilla may be destroyed by

Question # 12

Chromium (VI) is highly toxic and can cause

Question # 13

Most hazardous metal pollutant of automobile exhaust is

Question # 14

Pollution is

Question # 15

Soil salinity can be measured by

Question # 16

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

Question # 17

Water is often treated with chlorine to

Question # 18

In the atmosphere, CO2is about

Question # 19

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

Question # 20

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

Question # 21

Minamata disease is due to pollution of

Question # 22

Classical smog occurs in palces of

Question # 23

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

Question # 24

Ozone hole refers to

Question # 25

Which step is unnecessary for purification of water for drinking purposes

Question # 26

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 27

The pH range of the acid rain is

Question # 28

Which gasses are produced from landfills

Question # 29

What is the cause of water pollution

Question # 30

Carbon monoxide is pollutant as it

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
2 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
3 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
4 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
5 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
6 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
7 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
8 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
9 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
10 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone

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