A) Distillation under reduced pressure
B) Simple distillation
C) Fractional distillation
D) Steam distillation
Correct Answer: A
Solution :
Distillation under reduced pressure. Glycerol (B.P. 290°C) is separated from spent lye in the soap industry by distillation under reduced pressure, as for simple distillation very high temperature is required which might decompose the component.
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