17. A beaker contains s solution of substance ‘A’ precipitation of substance ‘A’ takes place when small amount of ‘A’ is added to the solution . The solution is…

a. Saturated

b. Supersaturated

c. Unsaturated

d. Concentrated

Ans. b

Explanation : when solute is added to the solution three cases my arise:

i. It dissolves into solution then solution is unsaturated

ii. It does not dissolve in the solution then solution is known as saturated

iii. When solute gets precipitated solution is known as supersaturated solution.