Question

The solution of natural rubber in benzene is the example of:
(A) Lyophobic colloids
(B) Macromolecular colloid
(C) multimolecular colloid
(D) Associated colloid

Answer 1

Hint:Colloidal solution term related to surface chemistry. When solute particles dissolve in solvent then a solution is formed. Different types of solution are formed depending on the size of solute particles.

Complete answer:
Colloids are three types on the basis of the nature of dispersed phase in colloidal solution-
\[\left( 1 \right)\]Macromolecular colloids- These are prepared by dissolving a macromolecule having high molecular mass in a dispersed medium like protein.
 \[\left( 2 \right)\]Multi-molecular colloids- Many small atoms or molecules aggregate to form a big molecule having colloidal range like Gild sol.
\[\left( 3 \right)\] Associated colloids- Some substances when dissolved in less concentration behave as electrolyte but dissolve in more concentrated form micelles like soap.
The solution of natural rubber in benzene is the example of macromolecular colloids.

Hence, option B is the correct option.

Additional information:
 Colloidal solution is the solution in which the size of solute particles lies between \[1 - 1000nm\] This solute particle makes a homogenous solution in means form a clear solution in which solute and solvent particles are not distinguishable from each other. This solute particle in colloidal solution does not settle down in solvent. And these solute particles are seen under ultra-microscopes.
In colloidal solution solute particles known as dispersed Phase and solvent particles are known as dispersion mediums. Both dispersed phase and dispersed medium form colloidal solution.
When a colloidal solution dispersed phase is liquid and the dispersed medium is solid it is known as gel Butter is an example of gel.

Note:
Colloids play a very important role in – Medicines- Many medicines are present in the form of sol like many eye lotion are sols.
Many components of the diet of human beings are in colloidal states like Fruit, juice, milk.
Blue colour of the sky is due to the Tindal effect. Tyndall effect may be defined as the scattering of light by colloidal particles is called the Tindal effect.