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

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Question # 1

Ecosystem is a smaller unit of

Question # 2

Which one is the most toxic?

Question # 3

Which gasses are produced from landfills

Question # 4

Carbon monoxide is harmful to human beings as it

Question # 5

Carbon monoxide is pollutant as it

Question # 6

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 7

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

Question # 8

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

Question # 9

Chromium (VI) is highly toxic and can cause

Question # 10

Sulphur dioxide affects

Question # 11

Result of ozone hole is

Question # 12

Which of the following is not an air

Question # 13

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

Question # 14

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

Question # 15

Chloroflurocarbon releases a chemical harmful to ozone

Question # 16

Chief air pollutant which is likely to deplete ozone layer

Question # 17

Exposure to CO results in

Question # 18

The amount of Si in the lithosphere is about

Question # 19

The % of CO2is the atmosphere is

Question # 20

Cyclone collector is used for minimizing

Question # 21

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 22

Drawback DDT as presticide is

Question # 23

Drained sewage has B.O.D

Question # 24

In the atmosphere, O2is about

Question # 25

Soil salinity can be measured by

Question # 26

DDT is

Question # 27

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

Question # 28

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

Question # 29

Spraying of DDT produces pollution of

Question # 30

Which is not a method for solid waste management

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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 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
4 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
5 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
6 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
7 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
8 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
9 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
10 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+

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