Question

Arrange the following mixtures in the decreasing order of their particle size.

• A. Suspension > colloid > solution
• B. Suspension > solution > colloid
• C. Solution > suspension > colloid
• D. Solution > colloid > suspension

Answer 1

The correct option is A Suspension > colloid > solution

A solution is a homogeneous mixture as the solute particles are completely dissolved and uniformly distributed in the solvent.

Suspensions and colloids are heterogeneous mixtures as the particle distribution is non-uniform.

The size of particles in a solution, colloid and suspension are:
$$\begin{array}{cc}\text{Mixture}& \text{Size of particles}\\ \text{Solution}& \text{Smaller than}{10}^{-9}\text{m}\\ \text{Colloid}& \text{Between}{10}^{-9}\text{-}{10}^{-6}\text{m}\\ \text{Suspension}& \text{Greater than}{10}^{-6}\text{m}\end{array}$$ So, the correct arrangement of mixtures in the decreasing order of their particle size is: suspension > colloid > solution.