Which of the following tests is used to detemine whether a solution containing a salt is saturated? a add a crystal of the same salt to the...

When a solution is saturated it means that the given
volume of solvent cannot dissolve any more quantity of the
solute.

To test if a solution is saturated we add a crystal
of the same salt to the solution. Three things can happen when this is done: the crystal
dissolves in the solution, there is no change in the state of the crystal, the crystal
grows larger. If the crystal dissolves in the solution it shows that the solution was
unsaturated and the solvent could accommodate more of the solute. If the crystal grows
larger in size it shows that the solution was super saturated, that lead to the solute
separating and depositing on the crystal. If the crystal undergoes no change it shows
the solution is saturated and can accommodate no more of the
solute.

The correct answer is option A, add a crystal of
the same salt to the solution.