How are the following colloids different from each other in respect of dispersion medium and dispersed phase? Give one example of each type. (a) An aerosol (b) A hydrosol (c) An emulsion.
An aerosol: A colloidal dispersion of a liquid in a gas is called an aerosol. Take, for example, fog. A hydrosol: A hydrosol is a colloidal sol of a solid that has been dispersed in water as the dispersion medium. As an example, consider the starch solution. An emulsion: When both the dispersed phase and the dispersion medium are in the liquid form, it is referred to as an emulsion. Consider the case of oil in water.
