Environmental Chemistry AFCAT Questions

AFCAT Chemistry

Environmental Chemistry MCQ Questions


13.
Which of the following is a major source of SO2 pollution?
A.
Plant respiration
B.
Vehicle exhaust
C.
Burning of coal containing sulphur
D.
Refrigerators
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ANSWER :
C. Burning of coal containing sulphur
14.
Photochemical smog is mainly caused by:
A.
CFCs and ozone
B.
CO2 and methane
C.
SO2 and water vapour
D.
Reaction of NOx and hydrocarbons in sunlight
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ANSWER :
D. Reaction of NOx and hydrocarbons in sunlight
15.
The main constituent of photochemical smog is:
A.
Ozone (O3) and PAN
B.
SO2
C.
Methane
D.
Carbon monoxide
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ANSWER :
A. Ozone (O3) and PAN
16.
Which type of smog is also called 'classical smog' or 'reducing smog'?
A.
Delhi smog
B.
London smog
C.
Photochemical smog
D.
Los Angeles smog
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ANSWER :
B. London smog
17.
PAN, a constituent of photochemical smog, stands for:
A.
Polyacrylonitrile
B.
Potassium ammonium nitrite
C.
Phenyl ammonium nitrate
D.
Peroxyacetyl nitrate
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ANSWER :
D. Peroxyacetyl nitrate
18.
The main greenhouse gas responsible for global warming is:
A.
Oxygen (O2)
B.
Argon (Ar)
C.
Carbon dioxide (CO2)
D.
Nitrogen (N2)
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ANSWER :
C. Carbon dioxide (CO2)