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

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

Question # 2

A pollutant affects

Question # 3

Water pollution is mainly due to

Question # 4

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 5

Ultraviolet radiation from sun causes a reaction that produces

Question # 6

Spraying of DDT produces pollution of

Question # 7

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 8

Chromium (VI) is highly toxic and can cause

Question # 9

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

Question # 10

Increased asthmatic attacks in certain seasons are related to

Question # 11

Atomospheric pollutant is

Question # 12

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

Question # 13

The region of earth capable of supporting life is

Question # 14

Pollution is

Question # 15

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

Question # 16

Soil salinity can be measured by

Question # 17

Ecosystem is a smaller unit of

Question # 18

In Antarctica ozone depletion is due to the formation of following compound

Question # 19

Which is not a component of environment

Question # 20

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 21

BOD is

Question # 22

Which one is not a pollutant normally?

Question # 23

Ecology is a science of environment and deals specially with

Question # 24

Which heavy metals do not have any safe limits

Question # 25

Increasing skin cancer and high mutation rate are due to

Question # 26

SO2Makes ______ acid rains

Question # 27

Domestic waste mostly constitutes

Question # 28

Chromium (VI) is highly toxic and can cause

Question # 29

The amount of Si in the lithosphere is about

Question # 30

The normal amount of overhead ozone is about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
2 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
5 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
6 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
7 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
8 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
9 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
10 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury

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