Photochemical smog is ____________ in character, while classical smog is ________ in character.
A
oxidising, reducing
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B
reducing, oxidising
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C
oxidising, oxidising
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D
reducing, reducing
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Solution
The correct option is A oxidising, reducing Photochemical smog is an oxidizing smoke formed by the action of sunlight on oxides of nitrogen and hydrocarbons. While classical smog is a reducing smog built by oxides of sulphur and particulate matter.