In a colloidal solution, both the dispersed phase and dispersion medium are in liquid phase. What is the type of colloid?

The equation which represents Freundlich adsorption isotherm is ( $x=$ amount of gas, $m=$ mass of solid)

Which one of the following is not the correct characteristic property of physical adsorption?

In each of four separate beakers (I, II, III, IV), $X \mathrm{~mL}$ of $y \mathrm{M} \mathrm{Fe}_2 \mathrm{O}_3 x \mathrm{H}_2 \mathrm{O}$ colloidal solution is present. Equal volume and equal concentration of KCl , $\mathrm{K}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right], \mathrm{K}_3 \mathrm{PO}_4$ and $\mathrm{K}_2 \mathrm{SO}_4$ was added into I, II, III and IV respectively.

The efficiency of precipitations in these beakers follows the order