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 step is unnecessary for purification of water for drinking purposes

Question # 2

Depletion of ozone layer is due to

Question # 3

Biodegradable pollutant is

Question # 4

What is the cause of water pollution

Question # 5

Classical smog occurs in palces of

Question # 6

Phosphate pollution is caused by

Question # 7

Oceans cove ______ percent of the surface of the earth

Question # 8

Chief source of water and soil pollution is

Question # 9

Most hazardous metal pollutant of automobile exhaust is

Question # 10

Ultraviolet radiation from sun causes a reaction that produces

Question # 11

DDT is

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

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

Question # 14

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

Question # 15

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

Question # 16

Which is not a component of environment

Question # 17

UV radiations bring about

Question # 18

Which is not a method for solid waste management

Question # 19

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

Question # 20

Chloroflurocarbon releases a chemical harmful to ozone

Question # 21

Exposure to CO results in

Question # 22

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

Question # 23

Spraying of DDT produces pollution of

Question # 24

Ozone depletion in stratosphere shall result in

Question # 25

Increased asthmatic attacks in certain seasons are related to

Question # 26

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

Question # 27

The normal amount of overhead ozone is about

Question # 28

Environmental pollution affects

Question # 29

Ecology is a science of environment and deals specially with

Question # 30

Water is often treated with chlorine to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
3 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
4 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
5 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
6 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
7 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
8 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
9 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
10 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

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