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

Ozone hole refers to

Question # 2

Soil remediation means

Question # 3

What is the cause of water pollution

Question # 4

In purification of potable water the coagulant used is

Question # 5

Ecology is a science of environment and deals specially with

Question # 6

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

Question # 7

Acid rains are produced by

Question # 8

Ecosystem is a smaller unit of

Question # 9

Chloroflurocarbon releases a chemical harmful to ozone

Question # 10

Atmosphere of big/metropolitan cities is polluted most by

Question # 11

Polycyolic aromatic hydrocarbons are taught to be

Question # 12

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

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

Which one is not a pollutant normally?

Question # 15

Acid rain is due to increase in atmospheric concentration of

Question # 16

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

Question # 17

Oceans cove ______ percent of the surface of the earth

Question # 18

Which one of the following is not air pollutant gas

Question # 19

Carbon monoxide is harmful to human beings as it

Question # 20

BOD is

Question # 21

A single chlorine free radical can destroy how many ozone molecules

Question # 22

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

Question # 23

Which is not the affect of polluted air on environment

Question # 24

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

Question # 25

Which of the following waste material is not recycled for use again

Question # 26

Cyclone collector is used for minimizing

Question # 27

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

Question # 28

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

Question # 29

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 30

Which is not a method for solid waste management

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
2 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
3 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
4 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
5 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
6 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
7 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
8 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
9 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
10 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

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