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

Sulphur dioxide affects

Question # 2

Photochemical smog is caused by

Question # 3

Chloroflurocarbon releases a chemical harmful to ozone

Question # 4

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

Question # 5

Atomospheric pollutant is

Question # 6

Which step is unnecessary for purification of water for drinking purposes

Question # 7

The amount of Si in the lithosphere is about

Question # 8

Which of the following is not an air

Question # 9

As it passes into food chain, the concentration of DDT

Question # 10

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

Question # 11

Which factor is helping to reduce the environmental pollution

Question # 12

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

Question # 13

Which one is the most toxic?

Question # 14

SO2and NO2produce pollution by increasing

Question # 15

Which one is the major reason for pollution in high cities?

Question # 16

Chromium (VI) is highly toxic and can cause

Question # 17

Potable water is considered to be

Question # 18

Which is not a component of environment

Question # 19

SO2Makes ______ acid rains

Question # 20

Chromium (VI) is highly toxic and can cause

Question # 21

Carbon monoxide is pollutant as it

Question # 22

UV radiations bring about

Question # 23

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

Question # 24

The largest item which is recycled is

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

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

Question # 27

Chief source of water and soil pollution is

Question # 28

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

Question # 29

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

Question # 30

Which is not the affect of polluted air on environment

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
2 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
3 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
4 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
5 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
6 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
7 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
8 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
9 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
10 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie

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