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

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

Question # 2

Carbon monoxide is harmful to human beings as it

Question # 3

Exposure to CO results in

Question # 4

Soil salinity can be measured by

Question # 5

Potable water is considered to be

Question # 6

Which is not a component of environment

Question # 7

A pollutant affects

Question # 8

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

Question # 9

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 10

Swage water is purified by

Question # 11

What is the cause of water pollution

Question # 12

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

Question # 13

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 14

Which is not a method for solid waste management

Question # 15

When chlorofluoro carbon are subjected to U.V. they form

Question # 16

Pollution is

Question # 17

Drawback DDT as presticide is

Question # 18

Acid rain is due to increase in atmospheric concentration of

Question # 19

Cyclone collector is used for minimizing

Question # 20

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

Question # 21

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

Question # 22

Result of ozone hole is

Question # 23

Ozone hole refers to

Question # 24

BOD is

Question # 25

Water is often treated with chlorine to

Question # 26

Which is not the affect of polluted air on environment

Question # 27

Chloroflurocarbon releases a chemical harmful to ozone

Question # 28

Which one is the most toxic?

Question # 29

As it passes into food chain, the concentration of DDT

Question # 30

Which gasses are produced from landfills

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
2 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
3 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
4 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
5 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
6 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
7 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
8 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
9 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
10 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these

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