Question

Fractional distillation works on the principle of:

• A. varying boiling point
• B. varying melting point
• C. varying molar mass
• D. none of these

Answer 1

The correct option is A varying boiling point

Fractional distillation is the separation of a mixture into its component parts, or fractions, separating chemical compounds by their boiling point by heating them to a temperature at which one or more fractions of the compound will vaporize. It uses distillation to fractionate.

Option $A$ is correct.