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

Which factor is helping to reduce the environmental pollution

Question # 2

Shahi Qilla may be destroyed by

Question # 3

Chief source of water and soil pollution is

Question # 4

Phosphate pollution is caused by

Question # 5

Which step is unnecessary for purification of water for drinking purposes

Question # 6

Ozone depletion in stratosphere shall result in

Question # 7

Which of the following is not an air

Question # 8

Which one is the most toxic?

Question # 9

NO and NO2gases in atmosphere are represented by

Question # 10

Which one of the following is not air pollutant gas

Question # 11

Result of ozone hole is

Question # 12

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 13

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

Question # 14

Ozone hole is maximum over

Question # 15

Chloroflurocarbon releases a chemical harmful to ozone

Question # 16

BOD is

Question # 17

A pollutant affects

Question # 18

Ozone hole refers to

Question # 19

Oceans cove ______ percent of the surface of the earth

Question # 20

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

Question # 21

Drained sewage has B.O.D

Question # 22

Burning of fossil fuels is the main source of pollution

Question # 23

Photochemical smog is caused by

Question # 24

Ecosystem is a smaller unit of

Question # 25

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 26

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

Question # 27

Water is often treated with chlorine to

Question # 28

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 29

Fungicides are the pesticides which

Question # 30

Exposure to CO results in

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
2 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
4 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
5 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
6 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
7 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
8 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
9 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
10 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide

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