Question

Match the column I with column II and mark the appropriate choice.

Column I	Column II
(A) Water loving colloids	(i) Irreversible
(B) Liquid dispersed in gas	(ii) Emulsifying agent
(C) Hydrophobic	(iii) Hydrophilic
(D) Soap	(iv) Aerosol
(E) Micelles	(v) Coagulation
(F) Hardy-Schulze rule	(vi) Associated colloids

• A. (A) $\to$ (iii), (B) $\to$ (iv), (C) $\to$ (i), (D) $\to$ (ii), (E)$\to$(vi),(F)$\to$(v)
• B. (A) $\to$ (i), (B) $\to$ (vi), (C) $\to$(v), (D) $\to$ (iii), (E)$\to$(iv),(F)$\to$(ii)
• C. (A) $\to$ (vi), (B) $\to$ (iv), (C) $\to$(v), (D) $\to$(ii), (E)$\to$(iii),(F)$\to$(i)
• D. (A) $\to$ (ii), (B) $\to$(iii), (C) $\to$ (iv), (D) $\to$ (v), (E)$\to$(vi),(F)$\to$(i)

Answer 1

The correct option is A (A) $\to$ (iii), (B) $\to$ (iv), (C) $\to$ (i), (D) $\to$ (ii), (E)$\to$(vi),(F)$\to$(v)

Hydrophillic colloid particles are attracted toward water. They are also called reversible sols.

Aerosol contains small particles of liquid or solid dispersed in a gas.

These are opposite in nature to hydrophilic colloids. The colloid particles are repelled by water. They are also called irreversible sols.

Soap is an excellent cleanser because of its ability to act as an emulsifying agent. An emulsifier is capable of dispersing one liquid into another immiscible liquid.

A micelle or micella is an aggregate of surfactant molecules dispersed in a liquid colloid.

This observation of Hardy and Schulze are known as Hardy Schulze law. It can be defined as: Greater is the valency of the oppositely charged ion of the electrolyte being added, the faster is the coagulation.