Absolute alcohol can be prepared from rectified spirit by _____ distillation.

vacuum

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fractional

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azeotropic

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none of these

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Solution

The correct option is D azeotropic
Absolute alcohol can be prepared from rectified spirit by azeotropic distillation. Absolute alcohol is 100% pure alcohol. Rectified spirit contains 95.87% ethanol and 4.13% water. It is a constant boiling mixture having boiling point 78.13 $^{o} C$ .

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