Which of the following processes can purify glycerol?

Fractional distillation

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Vacuum distillation

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Steam distillation

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Simple distillation

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Solution

The correct option is B Vacuum distillation
Glycerol is purified by distillation under reduced pressure. A vacuum is needed to create a low pressure. Therefore, glycerol can be purified by vacuum distillation.
Hence, option (b) is the correct answer.

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