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

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

Question # 2

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

Question # 3

Ecosystem is a smaller unit of

Question # 4

In incinerating the waste is burnt at

Question # 5

Air pollution is not caused by

Question # 6

Polycyolic aromatic hydrocarbons are taught to be

Question # 7

Ozone hole refers to

Question # 8

Carbon monoxide is harmful to human beings as it

Question # 9

Increased asthmatic attacks in certain seasons are related to

Question # 10

Which is not a method for solid waste management

Question # 11

Which heavy metals do not have any safe limits

Question # 12

Water is often treated with chlorine to

Question # 13

Which causes water pollution?

Question # 14

Pick up the correct statement

Question # 15

Swage water is purified by

Question # 16

In purification of potable water the coagulant used is

Question # 17

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

Question # 18

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

Question # 19

Exposure to CO results in

Question # 20

Which one of the following is not air pollutant gas

Question # 21

Cyclone collector is used for minimizing

Question # 22

SO2Makes ______ acid rains

Question # 23

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

Question # 24

Chloroflurocarbon releases a chemical harmful to ozone

Question # 25

Atomospheric pollutant is

Question # 26

The pH range of the acid rain is

Question # 27

Result of ozone hole is

Question # 28

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

Question # 29

Which factor is helping to reduce the environmental pollution

Question # 30

BOD is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
3 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
4 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
5 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
6 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
7 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
8 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
9 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

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