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

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Question # 1

Atomospheric pollutant is

Question # 2

What is the cause of water pollution

Question # 3

As it passes into food chain, the concentration of DDT

Question # 4

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 5

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 6

Potable water is considered to be

Question # 7

Most hazardous metal pollutant of automobile exhaust is

Question # 8

UV radiations bring about

Question # 9

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

Question # 10

Carbon monoxide is harmful to human beings as it

Question # 11

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

Question # 12

Soil remediation means

Question # 13

Which one of the following is not air pollutant gas

Question # 14

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

Question # 15

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

Question # 16

Which factor is helping to reduce the environmental pollution

Question # 17

The normal amount of overhead ozone is about

Question # 18

The largest item which is recycled is

Question # 19

Swage water is purified by

Question # 20

Which gas is not a constituent of atmosphere

Question # 21

Acid rains are produced by

Question # 22

Chloroflurocarbon releases a chemical harmful to ozone

Question # 23

Ozone hole refers to

Question # 24

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

Question # 25

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

Question # 26

Increased asthmatic attacks in certain seasons are related to

Question # 27

Water pollution is mainly due to

Question # 28

Atmosphere of big/metropolitan cities is polluted most by

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
2 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
3 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
4 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
5 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
6 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
7 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
8 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
9 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
10 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only

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