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

Atomospheric pollutant is

Question # 2

In incinerating the waste is burnt at

Question # 3

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 # 4

Exposure to CO results in

Question # 5

SO2and NO2produce pollution by increasing

Question # 6

Soil remediation means

Question # 7

In purification of potable water the coagulant used is

Question # 8

Drained sewage has B.O.D

Question # 9

Soil salinity can be measured by

Question # 10

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

Question # 11

Cyclone collector is used for minimizing

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

Environmental pollution affects

Question # 14

A pollutant affects

Question # 15

Eutrophication causes reduction in

Question # 16

Chief source of water and soil pollution is

Question # 17

Polycyolic aromatic hydrocarbons are taught to be

Question # 18

Water pollution is mainly due to

Question # 19

A single chlorine free radical can destroy how many ozone molecules

Question # 20

Carbon monoxide is pollutant as it

Question # 21

Chromium (VI) is highly toxic and can cause

Question # 22

Ultraviolet radiation from sun causes a reaction that produces

Question # 23

Chloroflurocarbon releases a chemical harmful to ozone

Question # 24

Ozone depletion in stratosphere shall result in

Question # 25

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

Question # 26

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

Question # 27

Which causes water pollution?

Question # 28

Which one of the following is not air pollutant gas

Question # 29

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

Question # 30

The pH range of the acid rain is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
2 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
3 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
4 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
5 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
6 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
7 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
8 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
9 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
10 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above

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