The minimum concentration of an electrolyte required to cause coagulation of a sol is known as ..........

What happens when dialysis is prolonged?

What is a paste?

Why does bleeding stop by rubbing moist alum?

Fog is a colloidal system of

Given below are two statements ($S-I$ and $S-II$):
$S-I$: Scattering of light by dispersed particles of a colloidal system is known as the Tyndall effect.
$S-II$: The diameter of the dispersed particles should not be much smaller than the wavelength of the light used.
Choose the most appropriate answer from the options given below.