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

Phosphate pollution is caused by

Question # 2

Ozone hole is maximum over

Question # 3

Chief source of water and soil pollution is

Question # 4

Acid rains are produced by

Question # 5

Carbon monoxide is harmful to human beings as it

Question # 6

Ecosystem is a smaller unit of

Question # 7

In incinerating the waste is burnt at

Question # 8

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

Question # 9

SO2and NO2produce pollution by increasing

Question # 10

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

Question # 11

Increasing skin cancer and high mutation rate are due to

Question # 12

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 13

Which is not the affect of polluted air on environment

Question # 14

Chief air pollutant which is likely to deplete ozone layer

Question # 15

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

Question # 16

Pollution is

Question # 17

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

Atmosphere of big/metropolitan cities is polluted most by

Question # 20

A single chlorine free radical can destroy how many ozone molecules

Question # 21

Sulphur dioxide affects

Question # 22

Environmental pollution affects

Question # 23

Spraying of DDT produces pollution of

Question # 24

Burning of fossil fuels is the main source of pollution

Question # 25

Which gasses are produced from landfills

Question # 26

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

Question # 27

Ozone depletion in stratosphere shall result in

Question # 28

Ultraviolet radiation from sun causes a reaction that produces

Question # 29

UV radiations bring about

Question # 30

As it passes into food chain, the concentration of DDT

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
4 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
5 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
6 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
7 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
8 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
9 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
10 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs

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