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

Eutrophication causes reduction in

Question # 2

Chief source of water and soil pollution is

Question # 3

Chromium (VI) is highly toxic and can cause

Question # 4

The region of earth capable of supporting life is

Question # 5

In the atmosphere, O2is about

Question # 6

Carbon monoxide is pollutant as it

Question # 7

Water is often treated with chlorine to

Question # 8

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

Question # 9

Which heavy metals do not have any safe limits

Question # 10

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 # 11

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 12

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 13

Which of the following is not an air

Question # 14

Atmosphere of big/metropolitan cities is polluted most by

Question # 15

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

Question # 16

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

Question # 17

Biodegradable pollutant is

Question # 18

Photochemical smog is caused by

Question # 19

Carbon monoxide is harmful to human beings as it

Question # 20

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

Question # 21

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

Question # 22

Which factor is helping to reduce the environmental pollution

Question # 23

Which is not a method for solid waste management

Question # 24

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

Question # 25

Ozone depletion in stratosphere shall result in

Question # 26

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

Question # 27

Atomospheric pollutant is

Question # 28

Which gasses are produced from landfills

Question # 29

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

Question # 30

Result of ozone hole is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
2 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
3 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
4 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
5 One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
6 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
7 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
8 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
9 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
10 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these

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