In an electrophoresis setup,a colloidal solution of glycine having a $pH$ of $5.97$ is kept at constant $T$ and $P$. What will happen if a few drops of base are added to it?

Identify the correct option regarding surface phenomenon.

Consider the following statements related to colloids.
$(I)$ Lyophobic colloids are not formed by simple mixing of dispersed phase and dispersion medium.
$(II)$ For emulsions,both the dispersed phase and the dispersion medium are liquid.
$(III)$ Micelles are produced by dissolving a surfactant in any solvent at any temperature.
$(IV)$ Tyndall effect can be observed from a colloidal solution with dispersed phase having the same refractive index as that of the dispersion medium.
The option with the correct set of statements is

Gold number is related with

Colloidal gold solutions prepared by different methods have different colors due to:

Which of the following represents a surfactant molecule?