it is multilayered adsorption.

the process is reversible in nature.

the process is not specific in nature.

enthalpy of adsorption is in the range of $80-240 \mathrm{~kJ} \mathrm{~mol}^{-1}$.

Multi molecular colloid - $\mathrm{S}_8$

Macro molecular colloid - enzyme

$\mathrm{As}_2 \mathrm{~S}_3$ sol - positively charged sol

Starch sol - Iyophilic sol

$A_2(g)+B_2(g) \xrightarrow{C(g)} 2 A B(g)$

$A(s)+B(s) \xrightarrow{C(s)} D(s)$

$A(g)+B(g) \xrightarrow{C(s)} D(g)$

$A_2(g)+B_2(g) \xrightarrow{C(g)} D(s)$

A-II, B-I, C-III, D-IV

A-IV, B-I, C-II, D-III

A-I, B-II, C-IV, D-III

A-IV, B-II, C-I, D-III