Which one of the following statements regarding photochemical smog is not correct?

Photochemical smog is formed by combination of smoke, dust and fog contanining sulphur dioxide from polluted air.

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Photochemical smog causes irritation in eyes and throut

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Carbon monooxide does not play any role in photochemical somg formation

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Photochemical smog is oxidising in nature

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Solution

The correct option is A Photochemical smog is formed by combination of smoke, dust and fog contanining sulphur dioxide from polluted air.
Classical smog is formed by the combination of smoke, dust and fog containing sulphur dioxide from polluted air.

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