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

Air pollution is not caused by

Question # 2

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

Question # 3

In the atmosphere, CO2is about

Question # 4

Photochemical smog is caused by

Question # 5

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

Question # 6

Chromium (VI) is highly toxic and can cause

Question # 7

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

Question # 8

Ecology is a science of environment and deals specially with

Question # 9

Minamata disease is due to pollution of

Question # 10

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

Question # 11

Chief air pollutant which is likely to deplete ozone layer

Question # 12

Which gas is not a constituent of atmosphere

Question # 13

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

Question # 14

Pollution is

Question # 15

Drained sewage has B.O.D

Question # 16

Which is not a method for solid waste management

Question # 17

Pick up the correct statement

Question # 18

Acid rains are produced by

Question # 19

B.O.D is connected with

Question # 20

Carbon monoxide is pollutant as it

Question # 21

Depletion of ozone layer is due to

Question # 22

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 23

Oceans cove ______ percent of the surface of the earth

Question # 24

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

Question # 25

Which one is not a pollutant normally?

Question # 26

Most hazardous metal pollutant of automobile exhaust is

Question # 27

Ultraviolet radiation from sun causes a reaction that produces

Question # 28

Chief source of water and soil pollution is

Question # 29

Mottling of teeth is due to presence of an element in drinking water

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
2 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
3 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
4 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
5 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
6 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
7 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
8 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
9 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
10 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
A. Iodine
B. Bromine
C. Lead
D. Carbon

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