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

B.O.D is connected with

Question # 2

Spraying of DDT produces pollution of

Question # 3

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 4

Chief source of water and soil pollution is

Question # 5

Ultraviolet radiation from sun causes a reaction that produces

Question # 6

Increased asthmatic attacks in certain seasons are related to

Question # 7

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

Question # 8

Drawback DDT as presticide is

Question # 9

Chloroflurocarbon releases a chemical harmful to ozone

Question # 10

Most hazardous metal pollutant of automobile exhaust is

Question # 11

Increasing skin cancer and high mutation rate are due to

Question # 12

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

Question # 13

Pick up the correct statement

Question # 14

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

Question # 15

The amount of Si in the lithosphere is about

Question # 16

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 17

The film forming components of paints are

Question # 18

UV radiations bring about

Question # 19

Eutrophication causes reduction in

Question # 20

As it passes into food chain, the concentration of DDT

Question # 21

In the atmosphere, CO2is about

Question # 22

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 23

Which causes water pollution?

Question # 24

Phosphate pollution is caused by

Question # 25

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 26

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

Question # 27

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 # 28

Which is not a component of environment

Question # 29

Ecosystem is a smaller unit of

Question # 30

Which gas is not a constituent of atmosphere

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
2 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+
3 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
4 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
5 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
6 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
7 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
8 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
9 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
10 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2

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