Given below are two statements: 
Assertion (A):  Simple distillation can help in separating a mixture of propan-1-ol (boiling point  97 ° C ) and propanone (boiling point  56 ° C ).
Reason (R): Liquids with a difference of more than  20 ° C  in their boiling points can be separated by simple distillation.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Hint: Liquids with a difference of more than 20°C in their boiling points can be separated by simple distillation.
 
Simple distillation can be used to separate a mixture of two liquids that do not react with each other and have a boiling point difference of more than 20°C. Hence, a mixture of propan-1-ol and propanone can be separated out.
Hence, both assertion and reason are true and the reason is the correct explanation of assertion.