Question

Milk is colloid in which:
A. liquid is dispersed in liquid
B. gas is dispersed in water
C. sugar is dispersed in water
D. solid is dispersed in liquid

Answer 1

Hint: Milk is colloid as in the case fat globules are dispersed in water, So from this we can understand that in which category of colloid it may stand as it is giving us knowledge about the medium of both dispersing agents. Milk is a colloid, with small globs of butterfat suspended all through the fluid.. Whipped cream is a colloid too. Colloids typically don’t separate into their individual components over time.

Complete step by step answer:
First of all we can clearly see in the question that milk is a form of emulsion containing fat globules being dispersed in a liquid solution.
Secondly fat globules are nothing but type of liquid in the above case, Hence the above colloid can be concluded as a colloid of liquid in liquid.

So, the correct answer is Option A.

Note:
An emulsion such as milk can be misconstrued as a solid being dispersed in water if one knows about the fact of fat globules being dispersed in water in the above case, but in actual liquid is dispersed in water as the fat globules are acting as a liquid in the case instead of being solid as they appears to be, so be careful while analysing the pair of mediums.
Pectin A water soluble substance that binds adjacent cell walls in plant tissue. Pectins also serve as a thickener in making jams and jellies.
Suspension A mixture in which particles are scattered all through the bulk of a fluid.