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

Water pollution is mainly due to

Question # 2

Photochemical smog is caused by

Question # 3

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

Question # 4

Drained sewage has B.O.D

Question # 5

Chromium (VI) is highly toxic and can cause

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

What is the cause of water pollution

Question # 10

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

Question # 11

Which of the following is not an air

Question # 12

Environmental pollution affects

Question # 13

B.O.D is connected with

Question # 14

Chief air pollutant which is likely to deplete ozone layer

Question # 15

Potable water is considered to be

Question # 16

Carbon monoxide is pollutant as it

Question # 17

Exposure to CO results in

Question # 18

Increasing skin cancer and high mutation rate are due to

Question # 19

Which is not a component of environment

Question # 20

A pollutant affects

Question # 21

Atomospheric pollutant is

Question # 22

Classical smog occurs in palces of

Question # 23

Soil salinity can be measured by

Question # 24

Which is not the affect of polluted air on environment

Question # 25

Biodegradable pollutant is

Question # 26

The % of CO2is the atmosphere is

Question # 27

Which one is the most toxic?

Question # 28

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

Question # 29

Water is often treated with chlorine to

Question # 30

Ozone hole refers to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
4 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
5 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
6 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
7 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
8 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
9 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
10 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers

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