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 one is the major reason for pollution in high cities?

Question # 2

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

Question # 3

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

Question # 4

Which gasses are produced from landfills

Question # 5

Which step is unnecessary for purification of water for drinking purposes

Question # 6

Which is not a component of environment

Question # 7

Ultraviolet radiation from sun causes a reaction that produces

Question # 8

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 9

Sulphur dioxide affects

Question # 10

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 11

Acid rain is due to increase in atmospheric concentration of

Question # 12

Atmosphere of big/metropolitan cities is polluted most by

Question # 13

The % of CO2is the atmosphere is

Question # 14

Air pollution is not caused by

Question # 15

In the atmosphere, O2is about

Question # 16

Ecology is a science of environment and deals specially with

Question # 17

Which causes water pollution?

Question # 18

NO and NO2gases in atmosphere are represented by

Question # 19

Atomospheric pollutant is

Question # 20

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

Question # 21

Carbon monoxide is harmful to human beings as it

Question # 22

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

Question # 23

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

Question # 24

What is the cause of water pollution

Question # 25

Pick up the correct statement

Question # 26

Chief source of water and soil pollution is

Question # 27

Environmental pollution affects

Question # 28

Most hazardous metal pollutant of automobile exhaust is

Question # 29

Swage water is purified by

Question # 30

In the atmosphere, CO2is about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
2 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
3 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
4 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
5 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
6 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
7 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
8 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
9 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
10 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer

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