The Zeta potential is related to which property of colloids?

If some gelatin is mixed in a colloidal solution of gold,then it does:

Identify the instrument used to find the structure of the surface of a material.

Into how many parts are colloidal sols divided according to the nature of interaction between the dispersed phase and the dispersion medium?

$Statement-1$: Micelles are formed by surfactant molecules above the critical micellar concentration $(CMC)$.
$Statement-2$: The conductivity of a solution having surfactant molecules decreases sharply at the $CMC$.

Match the following types of colloidal systems in List-$I$ with their corresponding names in List-$II$.

List-$I$	List-$II$
$(A)$ Solid dispersed in liquid	$(I)$ Emulsion
$(B)$ Liquid dispersed in liquid	$(II)$ Foam
$(C)$ Gas dispersed in liquid	$(III)$ Gel
$(D)$ Liquid dispersed in solid	$(IV)$ Sol
	$(V)$ Aerosol