Question

Arrange the following in the decreaing order of their particle size:
suspension, true solution and colloids

• A. True solution > Colloidal > Suspension
• B. Suspension > True solution > Colloidal
• C. True solution > Suspension > Colloidal
• D. Suspension > Colloidal > True solution

Answer 1

The correct option is D Suspension > Colloidal > True solution

A true solution is a homogeneous mixture. So, the particles will be completely dissolved.
Suspension and colloidal solutions are heterogeneous mixtures. The particles in colloidal solutions are relatively smaller than suspensions. However, the particles of a suspension can be seen with the naked eye, as opposed to a colloid.
Hence, the size of particles in suspension, true solution and colloidal solution varies in the order:
Suspension > Colloid > True solution