Question

During an experiment, accidently iodine got mixed up with a biological sample of proteins and polys. Identify the smallest colloid that can be obtained during the process of separation.

(a) Fats

(b) Amino acids

(c) Polys

(d) R molecules

The question was asked by my school principal while I was bunking the class.

My doubt is from Colloids in chapter Surface Chemistry of Engineering Chemistry II

Answer 1

Correct choice is (b) Amino acids

For explanation I would say: Given that the solution of iodine got mixed up with milk sample, we know milk is already a colloidal solution of polymers like amino acids, proteins, fats, vitamins etc, the smallest among all these colloidal particles is amino acids.