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

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 2

Potable water is considered to be

Question # 3

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 4

Phosphate pollution is caused by

Question # 5

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 # 6

Swage water is purified by

Question # 7

Ozone depletion in stratosphere shall result in

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Most hazardous metal pollutant of automobile exhaust is

Question # 12

Chief air pollutant which is likely to deplete ozone layer

Question # 13

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

Question # 14

Acid rain is due to increase in atmospheric concentration of

Question # 15

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

Question # 16

SO2Makes ______ acid rains

Question # 17

Depletion of ozone layer is due to

Question # 18

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

Question # 19

Ecosystem is a smaller unit of

Question # 20

Which gasses are produced from landfills

Question # 21

The film forming components of paints are

Question # 22

The region of earth capable of supporting life is

Question # 23

Increased asthmatic attacks in certain seasons are related to

Question # 24

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 25

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

Question # 26

Which one of the following is not air pollutant gas

Question # 27

Which one is the major reason for pollution in high cities?

Question # 28

Drained sewage has B.O.D

Question # 29

Which is not a method for solid waste management

Question # 30

Soil salinity can be measured by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
3 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
4 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
5 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
6 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
7 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
8 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
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 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these

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