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

In the atmosphere, O2is about

Question # 2

Increased asthmatic attacks in certain seasons are related to

Question # 3

BOD is

Question # 4

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

Question # 5

Chromium (VI) is highly toxic and can cause

Question # 6

The region of earth capable of supporting life is

Question # 7

Increasing skin cancer and high mutation rate are due to

Question # 8

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

Question # 9

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

Question # 10

Water which his considered to be safe for human consumption is known as

Question # 11

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 12

Drawback DDT as presticide is

Question # 13

Carbon monoxide is pollutant as it

Question # 14

Eutrophication causes reduction in

Question # 15

Depletion of ozone layer is due to

Question # 16

Mottling of teeth is due to presence of an element in drinking water

Question # 17

In purification of potable water the coagulant used is

Question # 18

Domestic waste mostly constitutes

Question # 19

Water is often treated with chlorine to

Question # 20

The amount of oxygen in the lithosphere is about

Question # 21

Atomospheric pollutant is

Question # 22

Spraying of DDT produces pollution of

Question # 23

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

Question # 24

Soil salinity can be measured by

Question # 25

Which is not the condition for the formation of smog

Question # 26

Photochemical smog is caused by

Question # 27

Exposure to CO results in

Question # 28

UV radiations bring about

Question # 29

In incinerating the waste is burnt at

Question # 30

Potable water is considered to be

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
2 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
3 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
4 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
5 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
6 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
7 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
8 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
9 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
10 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment

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