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

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

Question # 2

Which gasses are produced from landfills

Question # 3

Minamata disease is due to pollution of

Question # 4

SO2Makes ______ acid rains

Question # 5

Ozone hole refers to

Question # 6

Chief air pollutant which is likely to deplete ozone layer

Question # 7

Which one is the most toxic?

Question # 8

In Antarctica ozone depletion is due to the formation of following compound

Question # 9

Sulphur dioxide affects

Question # 10

BOD is

Question # 11

Spraying of DDT produces pollution of

Question # 12

Photochemical smog is caused by

Question # 13

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

Question # 14

As it passes into food chain, the concentration of DDT

Question # 15

In purification of potable water the coagulant used is

Question # 16

UV radiations bring about

Question # 17

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 # 18

A single chlorine free radical can destroy how many ozone molecules

Question # 19

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

Question # 20

Potable water is considered to be

Question # 21

Environmental pollution affects

Question # 22

Most hazardous metal pollutant of automobile exhaust is

Question # 23

Water pollution is mainly due to

Question # 24

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

Question # 25

Burning of fossil fuels is the main source of pollution

Question # 26

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

Question # 27

Ozone hole is maximum over

Question # 28

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 29

B.O.D is connected with

Question # 30

Pick up the correct statement

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
2 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
3 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
4 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
5 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
6 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
7 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
8 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
9 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

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