Which one of the following statements is false for hydrophilic sols?

When a graph is plotted between $\log \mathrm{x}/\mathrm{m}$ and $\log \mathrm{p}$, it is a straight line with an angle of $45°$ and an intercept of $0.3010$ on the y-axis. If the initial pressure is $0.3 \mathrm{atm}$, what will be the amount of gas adsorbed per gram of adsorbent? 

(Report your answer after multiplying by $10$)

The volume of nitrogen gas (measured at STP) required to cover a sample of silica gel with a monomolecular layer is $129{ \mathrm{cm}}^3/\mathrm{g}$ of gel. Calculate the surface area per gram of the gel if each nitrogen molecule occupies $16.2\times {10}^{-20}{ \mathrm{m}}^2.$

(Report your answer after dividing by $10$)

How many of these reactions are homogeneously catalysed?

(i) ${\text{2SO}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{NO}\left(\mathrm{g}\right)}{⟶}2{\mathrm{SO}}_3\left(\mathrm{g}\right)$

(ii) ${\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\stackrel{{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{l}\right)}{⟶}{\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6\left(\mathrm{aq}\right) + {\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6 \left(\mathrm{aq}\right)$

(iii) $2{\mathrm{SO}}_3\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{\text{ Pt(s) }}{⟶}2{\mathrm{SO}}_3\left(\mathrm{g}\right)$
(iv) ${\mathrm{N}}_2\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{Fe}\left(\mathrm{s}\right)}{⟶}2{\mathrm{NH}}_3\left(\mathrm{g}\right)$

(v) $4{\mathrm{NH}}_3\left(\mathrm{g}\right)+5{\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{Pt}\left(\mathrm{s}\right)}{\to }4\mathrm{NO}\left(\mathrm{g}\right)+6{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)$

(vi) ${\mathrm{CH}}_3{\mathrm{COOCH}}_3\left(\mathrm{l}\right)\stackrel{\mathrm{HCl}\left(\mathrm{l}\right)}{⟶}{\mathrm{CH}}_3\mathrm{COOH}\left(\mathrm{aq}\right)$

(vii) Vegetable oils $\left(\mathrm{l}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{Ni}\left(\mathrm{s}\right)}{⟶}$ Vegetable ghee $\left(\mathrm{s}\right)$ 

Among the following, the number of correct statements is:

(i) The stability of the lyophilic colloids is mainly due to the strong interaction between the dispersed particles and the dispersion medium.

(ii) The entropy change for the adsorption of the gases over the solid is positive.

(iii) Gelatin has a considerably lower value of the gold number and is an effective protective colloid.

(iv) The zeta potential is also responsible for the stability of the lyophobic colloid solution.

(v) The surface tension of the lyophilic colloidal solution is lesser than that of the dispersion medium.