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

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

Question # 2

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

Question # 3

In purification of potable water the coagulant used is

Question # 4

Which is not the affect of polluted air on environment

Question # 5

Which heavy metals do not have any safe limits

Question # 6

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

Question # 7

What is the cause of water pollution

Question # 8

BOD is

Question # 9

Chloroflurocarbon releases a chemical harmful to ozone

Question # 10

Chief source of water and soil pollution is

Question # 11

Ozone hole is maximum over

Question # 12

Exposure to CO results in

Question # 13

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

Question # 14

A pollutant affects

Question # 15

Ozone hole refers to

Question # 16

Acid rain is due to increase in atmospheric concentration of

Question # 17

Ultraviolet radiation from sun causes a reaction that produces

Question # 18

The normal amount of overhead ozone is about

Question # 19

A single chlorine free radical can destroy how many ozone molecules

Question # 20

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 21

Chromium (VI) is highly toxic and can cause

Question # 22

Minamata disease is due to pollution of

Question # 23

The region of earth capable of supporting life is

Question # 24

Soil salinity can be measured by

Question # 25

Eutrophication causes reduction in

Question # 26

Which one is the major reason for pollution in high cities?

Question # 27

As it passes into food chain, the concentration of DDT

Question # 28

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 # 29

SO2Makes ______ acid rains

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 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
2 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
3 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
4 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
5 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
6 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
7 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
8 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
9 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
10 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere

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