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

Increasing skin cancer and high mutation rate are due to

Question # 2

Pollution is

Question # 3

Air pollution is not caused by

Question # 4

The film forming components of paints are

Question # 5

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

Question # 6

Which one is the most toxic?

Question # 7

Which is not the affect of polluted air on environment

Question # 8

Depletion of ozone layer is due to

Question # 9

Shahi Qilla may be destroyed by

Question # 10

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

Question # 11

Which is not a method for solid waste management

Question # 12

Acid rains are produced by

Question # 13

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

Question # 14

Phosphate pollution is caused by

Question # 15

Ozone depletion in stratosphere shall result in

Question # 16

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 # 17

Which step is unnecessary for purification of water for drinking purposes

Question # 18

Acid rain is due to increase in atmospheric concentration of

Question # 19

Atomospheric pollutant is

Question # 20

Carbon monoxide is harmful to human beings as it

Question # 21

Chief source of water and soil pollution is

Question # 22

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

Question # 23

The % of CO2is the atmosphere is

Question # 24

The pH range of the acid rain is

Question # 25

Ecosystem is a smaller unit of

Question # 26

The amount of oxygen in the lithosphere is about

Question # 27

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

Question # 28

Which factor is helping to reduce the environmental pollution

Question # 29

Chromium (VI) is highly toxic and can cause

Question # 30

Which gas is not a constituent of atmosphere

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
2 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
3 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
4 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
5 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
6 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
7 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
8 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
9 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
10 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone

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