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

Most hazardous metal pollutant of automobile exhaust is

Question # 2

The film forming components of paints are

Question # 3

Atmosphere of big/metropolitan cities is polluted most by

Question # 4

Which one is not a pollutant normally?

Question # 5

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

Question # 6

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

Question # 7

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 8

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

Question # 9

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

Question # 10

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 11

Pick up the correct statement

Question # 12

Which is not a component of environment

Question # 13

What is the cause of water pollution

Question # 14

A single chlorine free radical can destroy how many ozone molecules

Question # 15

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 16

Which causes water pollution?

Question # 17

Acid rain is due to increase in atmospheric concentration of

Question # 18

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

Question # 19

Domestic waste mostly constitutes

Question # 20

UV radiations bring about

Question # 21

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

Question # 22

Chromium (VI) is highly toxic and can cause

Question # 23

Ecology is a science of environment and deals specially with

Question # 24

SO2and NO2produce pollution by increasing

Question # 25

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

Question # 26

NO and NO2gases in atmosphere are represented by

Question # 27

The largest item which is recycled is

Question # 28

The normal amount of overhead ozone is about

Question # 29

Increased asthmatic attacks in certain seasons are related to

Question # 30

Which is not a method for solid waste management

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
2 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
3 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
4 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
5 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
6 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
7 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
8 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
9 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
10 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these

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