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

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 2

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

Question # 3

Depletion of ozone layer is due to

Question # 4

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 5

Environmental pollution affects

Question # 6

Spraying of DDT produces pollution of

Question # 7

Classical smog occurs in palces of

Question # 8

Ecology is a science of environment and deals specially with

Question # 9

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 10

BOD is

Question # 11

Which is not the affect of polluted air on environment

Question # 12

Increasing skin cancer and high mutation rate are due to

Question # 13

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

Question # 14

The amount of Si in the lithosphere is about

Question # 15

B.O.D is connected with

Question # 16

Soil remediation means

Question # 17

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

Question # 18

Carbon monoxide is pollutant as it

Question # 19

Atmosphere of big/metropolitan cities is polluted most by

Question # 20

Atomospheric pollutant is

Question # 21

Phosphate pollution is caused by

Question # 22

Which one is the most toxic?

Question # 23

Swage water is purified by

Question # 24

Which is not a component of environment

Question # 25

Polycyolic aromatic hydrocarbons are taught to be

Question # 26

A single chlorine free radical can destroy how many ozone molecules

Question # 27

A pollutant affects

Question # 28

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

Question # 29

Exposure to CO results in

Question # 30

Which factor is helping to reduce the environmental pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
2 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
3 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
4 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
5 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
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 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
8 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
9 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
10 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers

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