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 particles in it are completely dissolved and uniformly distributed.

Suspensions and colloidal solutions are heterogeneous mixtures as the particles are neither completely dissolved nor uniformly distributed throughout.

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