Question

The substance has boiling point $563K$, but it starts decomposing near this temperature. Which type of distillation process is suitable for its purification?

• A. Distillation
• B. Fractional distillation
• C. Steam distillation
• D. Distillation under reduced pressure

Answer 1

The correct option is D Distillation under reduced pressure

Since the substance has boiling point 563K, but it starts decomposing near this temperature, it can be purified by vacuum distillation or distillation under reduced pressure as the method is used for the purification of high boiling liquids and liquids which decompose at or below their boiling points.low their boiling points.