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

The amount of Si in the lithosphere is about

Question # 2

Air pollution is not caused by

Question # 3

Which of the following human activities are contaminating surface and ground waters

Question # 4

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 # 5

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

Question # 6

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

Question # 7

DDT is

Question # 8

Water pollution is mainly due to

Question # 9

As it passes into food chain, the concentration of DDT

Question # 10

SO2Makes ______ acid rains

Question # 11

Which heavy metals do not have any safe limits

Question # 12

Biodegradable pollutant is

Question # 13

Most hazardous metal pollutant of automobile exhaust is

Question # 14

Chief air pollutant which is likely to deplete ozone layer

Question # 15

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

Question # 16

Soil remediation means

Question # 17

Chromium (VI) is highly toxic and can cause

Question # 18

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 19

Swage water is purified by

Question # 20

Chromium (VI) is highly toxic and can cause

Question # 21

Which one of the following is not air pollutant gas

Question # 22

Which causes water pollution?

Question # 23

Water is often treated with chlorine to

Question # 24

Burning of fossil fuels is the main source of pollution

Question # 25

Drained sewage has B.O.D

Question # 26

The largest item which is recycled is

Question # 27

Increasing skin cancer and high mutation rate are due to

Question # 28

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

Question # 29

Photochemical smog is caused by

Question # 30

Atomospheric pollutant is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
2 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
3 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
4 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
5 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
6 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
7 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
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 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
10 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide

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