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

Polycyolic aromatic hydrocarbons are taught to be

Question # 2

Ecosystem is a smaller unit of

Question # 3

The amount of oxygen in the lithosphere is about

Question # 4

The largest item which is recycled is

Question # 5

Chromium (VI) is highly toxic and can cause

Question # 6

Which one is the most toxic?

Question # 7

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

Question # 8

The region of earth capable of supporting life is

Question # 9

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 10

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

Question # 11

Result of ozone hole is

Question # 12

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 13

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

Question # 14

Increasing skin cancer and high mutation rate are due to

Question # 15

Biodegradable pollutant is

Question # 16

As it passes into food chain, the concentration of DDT

Question # 17

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 18

Which gasses are produced from landfills

Question # 19

Which of the following is not an air

Question # 20

Carbon monoxide is harmful to human beings as it

Question # 21

Acid rain is due to increase in atmospheric concentration of

Question # 22

Drained sewage has B.O.D

Question # 23

SO2and NO2produce pollution by increasing

Question # 24

Oceans cove ______ percent of the surface of the earth

Question # 25

A pollutant affects

Question # 26

Which is not the condition for the formation of smog

Question # 27

The pH range of the acid rain is

Question # 28

The % of CO2is the atmosphere is

Question # 29

The normal amount of overhead ozone is about

Question # 30

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
2 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
3 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
4 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
5 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
6 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
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 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
9 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
10 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution

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