Q. No.Select the correct statement from the following statements?
(1) CO which is a major pollutant resulting from the combustion of fuels in automobiles plays a major role in photochemical smog
(2) Classical smog has an oxidizing character while the photochemical smog is reducing in character
(3) Photochemical smog occurs in day time whereas the classical smog occurs in the morning hours
(4) During formation of smog the level of ozone in the atmosphere goes down
(1) CO which is a major pollutant resulting from the combustion of fuels in automobiles plays a major role in photochemical smog
(2) Classical smog has an oxidizing character while the photochemical smog is reducing in character
(3) Photochemical smog occurs in day time whereas the classical smog occurs in the morning hours
(4) During formation of smog the level of ozone in the atmosphere goes down
London smog id found in
(1) Summer during day time
(2) Summer during morning time
(3) Winter during morning time
(4) Winter during day time
Which of the following is the uppermost region of the atmosphere?
(1) Stratosphere
(2) Troposphere
(3) Exosphere
(4) Ionosphere
Which of the following statement is false?
(1) London smog is oxidizing in nature
(2) London smog contains H2SO4 droplets
(3) London smog is formed in winter
(4) London smog causes bronchitis
The smog is essentially caused by the presence of
(1) O2 and O3
(2) O2 and N2
(3) Oxides of sulphur and nitrogen
(4) O3 and N2
The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was :
(1) Ammonia
(2) Phosgene
(3) Methylisocyanate
(4) Methylamine
Which of the following is not involved in the formation of photochemical smog?
(1) NO
(2) O3
(3) CxHy
(4) SO2
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