Aerosols are colloids having either liquids dispersed in gas or solids dispersed in gas i.e. in one case the dispersed phase is liquid and in second case dispersed phase is solid...dispersing medium remains d same-gas.
Examples of first case are fog, clouds, mists
And that of second case are smoke, automobile exhaust.
Perfumes and deos are also aerosols where liquid is dispersedin gases.
Hope dis helps
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