Question

Chalk powder dissolved in water is an example of a _______

Answer 1

Hint: By the physical appearance of the solution the type of solution can be identified. The true solution looks clear and transparent. The suspension looks dusty. In suspension, the solute can be identified as the mass settled down on the bottom of the container.

Complete step by step solution:
The solution is made up of two main components:
Solute- A solute that dissolves in solvent.
Solvent- A solvent that dissolves the solute.
On the basis of the size of solute particles the solutions are of three types:
True solution.
Colloidal solution
Suspension.
A true solution is a homogeneous mixture. In the true solution, the size of the solute particles varies from $1$ to $10\,{{\text{A}}^ \circ }$. For example, on dissolving sugar in water, it completely dissolves and a clear solution forms.
A colloid is a heterogeneous mixture in which a phase remains dispersed in the suspension. The size of colloidal particles varies from $10$ to $1000\,{{\text{A}}^ \circ }$.
The heterogeneous mixture in which the solute does not dissolve into the solution is known as suspension. The size of suspension particles is larger than $1000\,{{\text{A}}^ \circ }$. On dissolving chalk in water, it does not dissolve completely in water. The chalk powder settles down which can be seen by bare eyes easily.

Therefore, chalk powder dissolved in water is an example of a suspension.

Note: Solute dissolves completely in a solvent in true solutions. The solute does not dissolve in a solvent in suspension. Solute settle down at the bottom in suspension. The solute remains dispersed in a solvent in colloids. The solute particle of true solution or colloid cannot be seen by naked eyes. Particles of the colloidal can settle down under high centrifugal force.