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

Eutrophication causes reduction in

Question # 2

Chromium (VI) is highly toxic and can cause

Question # 3

The film forming components of paints are

Question # 4

B.O.D is connected with

Question # 5

DDT is

Question # 6

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 # 7

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

Question # 8

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

Question # 9

A pollutant affects

Question # 10

Drawback DDT as presticide is

Question # 11

Increasing skin cancer and high mutation rate are due to

Question # 12

Cyclone collector is used for minimizing

Question # 13

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

Question # 14

Increased asthmatic attacks in certain seasons are related to

Question # 15

Acid rains are produced by

Question # 16

Chief air pollutant which is likely to deplete ozone layer

Question # 17

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 18

Biodegradable pollutant is

Question # 19

Which step is unnecessary for purification of water for drinking purposes

Question # 20

SO2and NO2produce pollution by increasing

Question # 21

Carbon monoxide is harmful to human beings as it

Question # 22

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

Question # 23

Chromium (VI) is highly toxic and can cause

Question # 24

Soil remediation means

Question # 25

Which is not a component of environment

Question # 26

Sulphur dioxide affects

Question # 27

Which one of the following is not air pollutant gas

Question # 28

Classical smog occurs in palces of

Question # 29

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

Question # 30

Most hazardous metal pollutant of automobile exhaust is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
2 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
3 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
4 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
5 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
6 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
7 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
8 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
9 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
10 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

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