For a linear plot of log $\frac{\text{x}}{\text{m}}$ versus $\text{log P}$ in a Freundlich adsorption isotherm, which of the following statements is CORRECT? ($\mathrm{k}$ and $\mathrm{n}$ are constants).

The Tyndall effect is observed only when following conditions are satisfied:

(a) The diameter of the dispersed particles is much smaller than the wavelength of the light used.

(b) The diameter of the dispersed particles is not much smaller than the wavelength of the light used

(c) The refractive indices of the dispersed phase and dispersion medium are almost similar in magnitude.

(d) The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.

A particular adsorption process has the following characteristics:

(i) It arises due to vander Waals forces.

(ii) it is reversible.

Identify the correct statement that describes the above adsorption process.

Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of $\log \frac{\mathrm{x}}{\mathrm{m}}$ versus $\log \mathrm{p}$ gives a straight line with slope equal to $0.5$, then which of the statements is correct? 

( $\frac{\mathrm{x}}{\mathrm{m}}$ is the mass of the gas adsorbed per gram of adsorbent)