Question

Examples of lyophilic colloids are:
A. Albumin
B.RBC
C. Smoke
D. Metal Sulphide

Answer 1

In order to solve this question we should have the knowledge that the colloidal solution has a strong affinity for the dispersion medium. And sols of these are stable and are of reversible nature. This is a way to determine whether a mixture is colloid or not that way is a tyndall effect. Which is scattering a beam of light by a medium containing small suspended particles.

Complete step-by-step answer: For this question we should know what are lyophilic colloids so first we will study this:
Lyophilic colloids: These are the colloidal solutions in which dispersed particles have strong affinity for the dispersion medium, these sols are stable in nature and of reversible nature.
They are strong interaction forces between dispersed phase and the dispersion medium.
We will some of the methods to coagulate these sols
1.By the help of prolonged electrophoresis, by this method the ions are coagulating and then neutralized.
2.By adding the electrolyte in large amounts such that oppositely charged ions are added in more proportions which cause neutralizations of oppositely charged ions leading to coagulation.
Now we will study lyophobic colloids;
These are thermodynamically unstable colloids that hate solvent. They have the same viscosity as the solvent and there is less no attraction force between colloids and the liquid.

Hence option (D) is correct.

Note: While solving these types of questions one thing should be kept in mind that is these are theory based questions so we should always make the correct information regarding all the options and then we will make sure about the correct option.