5.26 Explain the terms with suitable examples:

(i) Alcosol         (ii) Aerosol         (iii) Hydrosol.

(i)
Alcosol:
A colloidal solution having alcohol as the dispersion medium and a solid substance as the dispersed phase is called an alcosol. For example the colloidal sol of cellulose nitrate in ethyl alcohol is an alcosol.

(ii)
Aerosol:
A colloidal solution having gas as the dispersion medium and a solid as the dispersed phase is called an aerosol. For example fog

(iii)
Hydrosol
A colloidal solution having water as the dispersion medium and a solid as the dispersed phase is called a hydrosol.

For example starch sol or gold sol