Question

A liquid which decomposes at its boiling point can be purified by

• A. distillation at atmospheric pressure
• B. distillation under reduced pressure
• C. fractional distillation
• D. steam distillation

Answer 1

Answer: (B)

distillation under reduced pressure

Answer 2

A liquid which decomposes at or below its boiling points can be purified by distillation under reduced pressure or vaccume distillation e.g., purification of glycerol, $H_{2}O_{2}$ etc, concentration of cane sugar juice.