How are the colloidal solutions classified on the basis of physical states of the dispersed phase and dispersion medium?

(N/A) Colloidal solutions are classified based on the physical states (solid,liquid,or gas) of the dispersed phase and the dispersion medium. Since gas in gas mixtures form homogeneous solutions,they are not considered colloids. Thus,there are $8$ possible types of colloidal systems:

$S. No.$	Dispersed Phase and Dispersion Medium	Type of Colloid	Example
$1.$	Solid in Solid	Solid Sol	Gemstone
$2.$	Solid in Liquid	Sol	Paint
$3.$	Solid in Gas	Aerosol	Smoke
$4.$	Liquid in Solid	Gel	Cheese
$5.$	Liquid in Liquid	Emulsion	Milk
$6.$	Liquid in Gas	Aerosol	Fog
$7.$	Gas in Solid	Solid Foam	Pumice stone
$8.$	Gas in Liquid	Foam	Froth