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

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 # 2

Which step is unnecessary for purification of water for drinking purposes

Question # 3

Chief source of water and soil pollution is

Question # 4

Which one of the following is not air pollutant gas

Question # 5

In the atmosphere, O2is about

Question # 6

The pH range of the acid rain is

Question # 7

Swage water is purified by

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Oceans cove ______ percent of the surface of the earth

Question # 12

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

Question # 13

Ultraviolet radiation from sun causes a reaction that produces

Question # 14

Fungicides are the pesticides which

Question # 15

The amount of Si in the lithosphere is about

Question # 16

Which gasses are produced from landfills

Question # 17

Which of the following is not an air

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

A single chlorine free radical can destroy how many ozone molecules

Question # 20

Most hazardous metal pollutant of automobile exhaust is

Question # 21

A pollutant affects

Question # 22

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

Question # 23

Ecosystem is a smaller unit of

Question # 24

What is the cause of water pollution

Question # 25

Ozone hole is maximum over

Question # 26

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

Question # 27

Spraying of DDT produces pollution of

Question # 28

Increasing skin cancer and high mutation rate are due to

Question # 29

Pick up the correct statement

Question # 30

Which of the following waste material is not recycled for use again

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
2 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
3 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
4 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
5 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
6 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
7 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
8 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
9 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
10 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth

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