Question

what is fractional distillation?​

Answer 1

separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column is called fractional distillation.

Answer 2

Fractional distillation is a process in which at first vaporisation of liquids whose boiling point is less than 20k and thatvapour will again be conversation into liquid.

1)It is used to separate different gases from air.

2)It is also used for separating different petroleum products.