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

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

Question # 2

Carbon monoxide is harmful to human beings as it

Question # 3

Ecosystem is a smaller unit of

Question # 4

Soil remediation means

Question # 5

Which factor is helping to reduce the environmental pollution

Question # 6

The film forming components of paints are

Question # 7

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

Question # 8

A pollutant affects

Question # 9

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 10

Which causes water pollution?

Question # 11

Ultraviolet radiation from sun causes a reaction that produces

Question # 12

Which is not a method for solid waste management

Question # 13

Ecology is a science of environment and deals specially with

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

Most hazardous metal pollutant of automobile exhaust is

Question # 16

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 17

As it passes into food chain, the concentration of DDT

Question # 18

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

Question # 19

The amount of Si in the lithosphere is about

Question # 20

Drawback DDT as presticide is

Question # 21

Minamata disease is due to pollution of

Question # 22

The region of earth capable of supporting life is

Question # 23

In the atmosphere, O2is about

Question # 24

Which heavy metals do not have any safe limits

Question # 25

Spraying of DDT produces pollution of

Question # 26

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

Question # 27

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

Question # 28

Atmosphere of big/metropolitan cities is polluted most by

Question # 29

Acid rain is due to increase in atmospheric concentration of

Question # 30

What is the cause of water pollution

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
3 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
4 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
5 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
6 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
7 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
8 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
9 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
10 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above

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