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

Which one of the following is not air pollutant gas

Question # 2

Ecology is a science of environment and deals specially with

Question # 3

Drawback DDT as presticide is

Question # 4

Atomospheric pollutant is

Question # 5

BOD is

Question # 6

NO and NO2gases in atmosphere are represented by

Question # 7

Soil salinity can be measured by

Question # 8

SO2and NO2produce pollution by increasing

Question # 9

Increased asthmatic attacks in certain seasons are related to

Question # 10

The largest item which is recycled is

Question # 11

Pollution is

Question # 12

The % of CO2is the atmosphere is

Question # 13

DDT is

Question # 14

Ozone hole refers to

Question # 15

Oceans cove ______ percent of the surface of the earth

Question # 16

Which causes water pollution?

Question # 17

When chlorofluoro carbon are subjected to U.V. they form

Question # 18

Chromium (VI) is highly toxic and can cause

Question # 19

Water pollution is mainly due to

Question # 20

A single chlorine free radical can destroy how many ozone molecules

Question # 21

The amount of oxygen in the lithosphere is about

Question # 22

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

Question # 23

Eutrophication causes reduction in

Question # 24

Chromium (VI) is highly toxic and can cause

Question # 25

Increasing skin cancer and high mutation rate are due to

Question # 26

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

Question # 27

Result of ozone hole is

Question # 28

Most hazardous metal pollutant of automobile exhaust is

Question # 29

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

Question # 30

Spraying of DDT produces pollution of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
2 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
3 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
4 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
5 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
6 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
7 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
8 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
9 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
10 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these

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