Fractional distillation is a process by which the separation of different fractions from a liquid mixture is carried out by making use of difference of

Options

A. Solubility
B. Melting point
C. Boiling point
D. Density

Answer

C

Explanation

The bubble plate type fractionating column is shown below :

In this, the long tower is divided into a number of compartments by means of shelves having openings. The openings are covered with caps called bubble caps. Each shelf has an overflow pipe which keeps the liquid to a certain level and then allows the extra liquid to trickle down to the lower shelf. This type of column is used for continuous separation of bulk quantities of liquids. For example, this method is used for distillation of fermented liquid for the manufacture of rectified spirit.
N/A
Applications (i) It is used to separate different fractions of crude oil in petroleum industry such as gasoline, diesel oil, kerosene oil, lubricating oil, etc.
(ii ) It can be used for the separation of acetone and methanol from pyroligneous acid obtained by destructive distillation of wood.