What happens during electro-osmosis of Fe(OH)₃ sol?

1.	Sol particles move towards the anode.
2.	Sol particles move towards the cathode of a sol.
3.	The higher the gold number, the greater will be the protective power of a lyophilic colloid.
4.	The dispersion medium moves towards the anode.

According to Freundlich adsorption isotherm, at high pressure, the value of $\frac{\mathrm{x}}{\mathrm{m}}$ is - 

1. Directly proportional to the pressure.

2. Inversely proportional to the pressure.

3. Directly proportional to the square of the pressure.

4. Independent of the pressure.

Among the following options, the gas that will be more readily adsorbed on the surface of charcoal is:

1. $C{O}_2$             

2. $N{H}_3$               

3. ${\mathrm{Br}}_2$           

4. $N_2$

The equation that represents a Freundlich adsorption isotherm is: 

1. $\frac{x}{m}=k{p}^{0.3}$

2. $\frac{x}{m}=k{p}^{2.5}$

3. $\frac{x}{m}=k{p}^{-0.5}$

4. $\frac{x}{m}=k{p}^{-1}$

Emulsifying agent stabilized the emulsion of oil in water by

1.  Forming an interfacial film between suspended particles and the medium

2.  Dissolving the suspended particles into the medium completely

3.  Coagulating the suspended particles from the medium completely

4.  Converting the suspended particles into vapor completely

If $\frac{22}{7}\mathrm{g}$ of charcoal having, active surface area 1000 ${\mathrm{m}}^2/\mathrm{g}$ is used for monolayer absorption of a gas having molecular radius ${10}^{-8}$ cm, then volume of the absorbed gas at STP is [Avogadro's number = $6 \times {10}^{23}$]

1.  11.2 L

2.  22.4 L

3.  7.46 L

4.  3.73 L

Among the following, the surfactant that will form micelles in aqueous solution at the highest molar concentration

1.  ${\mathrm{CH}}_3 - {\left({\mathrm{CH}}_2\right)}_{14} - {{\mathrm{OSO}}_3}^{-} {\mathrm{K}}^{+}$

2.  ${\mathrm{CH}}_3 - {\left({\mathrm{CH}}_2\right)}_{10} - {\mathrm{COO}}^{-} {\mathrm{Na}}^{+}$

3.  ${\mathrm{CH}}_3 - {\left({\mathrm{CH}}_2\right)}_{11} - {{\mathrm{COO}}_3}^{-} {\mathrm{Na}}^{+}$

4.  ${\mathrm{CH}}_3 - {\left({\mathrm{CH}}_2\right)}_{15} - \stackrel{+}{\mathrm{N}}{\mathrm{H}}_3 {\mathrm{Br}}^{\mathrm{e}}$

The decreasing order of coagulating power of an electrolyte to coagulate the ${\mathrm{As}}_2{\mathrm{S}}_3$ sol is

1.  $\mathrm{NaCl} > {\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3 > {\mathrm{Ba}}_3{\left({\mathrm{PO}}_4\right)}_2$

2.  ${\mathrm{Ba}}_3{\left({\mathrm{PO}}_4\right)}_2 > NaCl > {\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3$

3.  ${\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3 > {\mathrm{Ba}}_3{\left({\mathrm{PO}}_4\right)}_2 > NaCl$

4.  $\mathrm{NaCl} >{\mathrm{Ba}}_3{\left({\mathrm{PO}}_4\right)}_2 > {\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3$

When detergent is added in water, some properties are measured with respect to concentration. Choose the incorrect plot.

1.  

2.  

3.  

4.  

The coagulation of 100 ml of colloidal solution of gold is completely prevented by the addition of 0.25 gm of a substance 'X' to it before adding 1 ml of 10%  NaCl solution. The gold number of 'X' is

1.  25

2.  0.25

3.  2.5

4.  0.025