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 Antarctica ozone depletion is due to the formation of following compound

Question # 2

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

Question # 3

The largest item which is recycled is

Question # 4

As it passes into food chain, the concentration of DDT

Question # 5

Ozone hole is maximum over

Question # 6

Acid rains are produced by

Question # 7

Chief air pollutant which is likely to deplete ozone layer

Question # 8

Carbon monoxide is harmful to human beings as it

Question # 9

Potable water is considered to be

Question # 10

Which step is unnecessary for purification of water for drinking purposes

Question # 11

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

Question # 12

The amount of oxygen in the lithosphere is about

Question # 13

Which is not the affect of polluted air on environment

Question # 14

Minamata disease is due to pollution of

Question # 15

Photochemical smog is caused by

Question # 16

Soil remediation means

Question # 17

Increased asthmatic attacks in certain seasons are related to

Question # 18

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

Question # 19

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

Question # 20

Chromium (VI) is highly toxic and can cause

Question # 21

Chief source of water and soil pollution is

Question # 22

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 # 23

Classical smog occurs in palces of

Question # 24

Which factor is helping to reduce the environmental pollution

Question # 25

Which one is the most toxic?

Question # 26

Which is not a component of environment

Question # 27

Domestic waste mostly constitutes

Question # 28

Which causes water pollution?

Question # 29

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

Question # 30

The amount of Si in the lithosphere is about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
2 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
3 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
4 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
5 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
6 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
7 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
8 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
9 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
10 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above

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