Question

what is mean by saturated solution and unsaturated solution

Answer 1

. Saturated Solution. Asolution with solute that dissolves until it is unable to dissolve anymore, leaving the undissolved substances at the bottom. 

Unsaturated Solution. A solution (with less solute than the saturated solution) that completely dissolves, leaving no remaining substance

Answer 2

the solution in which we cannot add more solute in the solvent is known as a saturated solution.
the solution in which we can add solute in the solvent is known as an unsaturated solution