Absolute alcohol can be prepared from rectified spirit by
Absolute alcohol can be prepared from rectified spirit by
A. distillation under reduced pressure
B. azeotropic distillation with benzene
C. Fractional distillation
D. Keeping over fresh CaO for few hours followed by distilling .
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Correct Answer - B::D
Absolute alcohol is manufactured from rectified spirit by azeotropic distillation with benzene.On a small scale, in laboratory, absolute alcohol can be prepared by keeping rectified spirit over fresh CaO (which absorbs water) for few hours followed by distillation
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