Correct option is (a) True
Explanation: Fractional distillation, like normal distillation is also based on the difference in boiling point of the liquids. The only difference in fractional distillation is that, the liquids associated with this method have lesser difference in boiling point than the liquids involved in normal distillation. So, the high boiling point liquids condense at the bottom while the low boiling point liquid condense all the way to the top of the distillation column.