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

Ozone depletion in stratosphere shall result in

Question # 2

Chromium (VI) is highly toxic and can cause

Question # 3

Chromium (VI) is highly toxic and can cause

Question # 4

Atomospheric pollutant is

Question # 5

B.O.D is connected with

Question # 6

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

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

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

Question # 9

Which one is not a pollutant normally?

Question # 10

Chloroflurocarbon releases a chemical harmful to ozone

Question # 11

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 12

Which is not a component of environment

Question # 13

In the atmosphere, O2is about

Question # 14

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 15

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

Question # 16

Polycyolic aromatic hydrocarbons are taught to be

Question # 17

The film forming components of paints are

Question # 18

A pollutant affects

Question # 19

DDT is

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

The normal amount of overhead ozone is about

Question # 24

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

Question # 25

Swage water is purified by

Question # 26

The amount of oxygen in the lithosphere is about

Question # 27

Most hazardous metal pollutant of automobile exhaust is

Question # 28

The largest item which is recycled is

Question # 29

Ozone hole refers to

Question # 30

Cyclone collector is used for minimizing

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
3 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
4 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
5 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
6 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
7 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
8 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
9 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
10 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%

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