Explain the terms with suitable examples. (i) alcohol, (ii) aerosol (iii)Hydrosol.

i) Alcohol-a colloidal solution having alcohol as the dispersion medium and a solid substance as the dispersed phase. Ex- colloidal sol of cellulose nitrate in ethyl alcohol.

ii)Aerosol- a colloidal solution having gas as the dispersion medium and a solid substance as the dispersed phase.Ex-Smoke.

iii)Hydrosol- a colloidal solution having Water as the dispersion medium and a solid substance as the dispersed phase. Ex-Gold sol.