Properties of Colloidal Solutions

Given below are two statements :
Statement $\mathrm{I}$ :
In the coagulation of a negative sol, the flocculating power of the three given ions is in the order -
${\mathrm{Al}}^{3+}>{\mathrm{Ba}}^{2+}>{\mathrm{Na}}^{+}$
Statement $\mathrm{II}$ :
In the coagulation of a positive sol, the flocculating power of the three given salts is in the order -
$\mathrm{NaCl}>{\mathrm{Na}}_2{\mathrm{SO}}_4>{\mathrm{Na}}_3{\mathrm{PO}}_4$
In the light of the above statements, choose the most appropriate answer from the options given below:

The CORRECT order of flocculating ions, in coagulation of a positive sols is

The process that CANNOT be employed for coagulation of lyophobic sols is

Which of the following does NOT lead to precipitation of Iyophobic sols?

A colloidal solution placed in dark is illuminated with a bright white light source. This colloidal solution is observed from a direction at right angles to the direction of the light source. Which of the following options best describes what is observed?

The sol which cannot coagulate blood (haemoglobin) is

Brownian movement belongs to which of the following given property?

Flocculation value is expressed in terms of

Most effective coagulant for a colloidal solution of arsenic sulphide in water is

Which of the following is with highest and lowest flocculation value among ${\mathrm{Al}}^{+3},{\mathrm{Na}}^{+},{\mathrm{Mg}}^{+2},{\mathrm{Ba}}^{+2}$ ?
 

Which statement is incorrect?

When a river enters the sea, a delta is formed. Formation of delta is due to

Gelatin is often used as an ingredient in the manufacture of ice-cream. The reason for this is

Which of the following has minimum protecting power?

Which of the following processes best describes the purification of muddy water by addition of alum?

An electrical potential difference will be produced between the two ends of capillary or porous plug is due to the flow of _____.

Streaming potential is opposite to _____.

How does the streaming potential generated?

Streaming potential is the reverse of electro-osmosis. Justify.