Question

In the refining of petroleum, in a fractionating column, the principle used is _______.

• A. difference in melting point
• B. difference in boiling point
• C. difference in freezing point
• D. None of these

Answer 1

The correct option is B difference in boiling point

A fractionating column is an essential thing which is used in distillation of liquid mixtures so as to separate the mixture into its component parts, or fractions, based on the differences in their boiling temparatures. Fractionating columns are used in small scale laboratory distillation process as well as for large scale industrial distillations.

Hence option B is correct.