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

In Antarctica ozone depletion is due to the formation of following compound

Question # 2

Swage water is purified by

Question # 3

The film forming components of paints are

Question # 4

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

Question # 5

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

Question # 6

Soil salinity can be measured by

Question # 7

Which is not a component of environment

Question # 8

Domestic waste mostly constitutes

Question # 9

Polycyolic aromatic hydrocarbons are taught to be

Question # 10

Ozone hole refers to

Question # 11

Environmental pollution affects

Question # 12

Which is not the affect of polluted air on environment

Question # 13

Water is often treated with chlorine to

Question # 14

Carbon monoxide is harmful to human beings as it

Question # 15

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

Question # 16

Which heavy metals do not have any safe limits

Question # 17

In the atmosphere, CO2is about

Question # 18

Which one is not a pollutant normally?

Question # 19

The region of earth capable of supporting life is

Question # 20

Cyclone collector is used for minimizing

Question # 21

Carbon monoxide is pollutant as it

Question # 22

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 23

Which of the following is not an air

Question # 24

Chief air pollutant which is likely to deplete ozone layer

Question # 25

Which step is unnecessary for purification of water for drinking purposes

Question # 26

The amount of oxygen in the lithosphere is about

Question # 27

The largest item which is recycled is

Question # 28

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

Question # 29

BOD is

Question # 30

Drained sewage has B.O.D

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
2 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
3 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
4 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
5 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
6 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
7 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
8 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
9 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
10 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution

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