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

In the atmosphere, O2is about

Question # 2

Carbon monoxide is pollutant as it

Question # 3

Environmental pollution affects

Question # 4

Which gasses are produced from landfills

Question # 5

Swage water is purified by

Question # 6

Exposure to CO results in

Question # 7

Which step is unnecessary for purification of water for drinking purposes

Question # 8

Which is not a component of environment

Question # 9

Which is not the condition for the formation of smog

Question # 10

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

Question # 11

In incinerating the waste is burnt at

Question # 12

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

Question # 13

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

Question # 14

Domestic waste mostly constitutes

Question # 15

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

Question # 16

Ozone depletion in stratosphere shall result in

Question # 17

In the atmosphere, CO2is about

Question # 18

Chief air pollutant which is likely to deplete ozone layer

Question # 19

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 20

The amount of Si in the lithosphere is about

Question # 21

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

Question # 22

Polycyolic aromatic hydrocarbons are taught to be

Question # 23

Photochemical smog is caused by

Question # 24

DDT is

Question # 25

Cyclone collector is used for minimizing

Question # 26

UV radiations bring about

Question # 27

Shahi Qilla may be destroyed by

Question # 28

Chloroflurocarbon releases a chemical harmful to ozone

Question # 29

Atmosphere of big/metropolitan cities is polluted most by

Question # 30

Pollution is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
2 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
3 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
4 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
5 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
6 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
7 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
8 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
9 One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
10 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper

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