Question

how can the boiling point of a liquid be raised, without adding any impurity​

Answer 1

Explanation:

By increasing the pressure, the liquid's boiling point can be increased without adding any soluble impurities. The liquid's pressure can be increased which subsequently increases its boiling point of the liquid.

Answer 2

Answer:

In order to raise the boiling point of a liquid without adding anything in it, we can increase the pressure around the liquid, this can delay the boiling of the liquid and elevate the boiling point. By increasing the pressure, the liquid's boiling point can be increased without adding any soluble impurities.