Which of the following is incorrectly matched?

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.

All colloidal solutions exhibit .......

The simplest way to check whether a system is colloidal,is

Peptization is defined as:

Which of the following is a hydrophilic colloidal sol?