Question

Impure glycerine can be purified by
(a) Steam distillation (b) Simple distillation
(c) Vacuum distillation (d) Extraction with a solvent

Answer 1

Impure glycerine can be purified by simple distillation process.

1)Crude glycerine is very impure and cannot be used in industries .

2)Before industrial use glycerine is purified distillation.

Answer 2

Impure glycerine is purified by Vaccum Distillation.

: Impure glycerine is purified by this method as it has a very high boiling point and will further degrade below the boiling point after the particular span of time.

: Vaccum pump is the main equipment used to purify impure glycerine to reduce the pressure.

: It's used to purify impure glycerine mainly in the soap industries for separating glycerol from spent lye.

: Specifically it's one of the best and easiest methods to purify (impure glycerine).