The dispersed phase and dispersion medium of fog respectively are

The difference between colloids and crystalloids is based on

$100 \, cm^3$ of gold sol requires $10^{-4} \, g$ of gelatin to prevent coagulation when $1 \, cm^3$ of $10 \% \, NaCl$ solution is added. The gold number of gelatin is ............ .

Amphiphilic molecules are normally associated with

Purple of Cassius is:

Which among the following is an example of an emulsion?