Vacuum distillation is used to purify liquids which

Vaccum distillation: (or) distillation under reduced pressure:This technique is helpful to purify the organic compounds which undergo decomposition below their boiling point.Principle: In this technique the liquids are made to boil at a temperature lower than their normal boiling point by reducing the pressure on their surface.→ The pressure is reduced by using suction pump (or) vacuum pump (or) water pump.