How is photochemical smog different than classical smog?

environmentchemistry
cbse

#1

Classical smog :

  1. occurs in cool humid climate.
    (2) It is a mixture of smoke, fog and sulphur dioxide
    Photochemical mog :
    1.It occurs in warm, dry and sunny dimate.
    2.It results from the action of sunlight on unsaturated hydrocarbons and nitrogen oxides