BIOLOGY
CLASSIFICATION OF VITAMINS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Steam distillation
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Vacuum distillation
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Molecular distillation
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None of the above
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Detailed explanation-1: -Ans. Steam distillation can be used to purify a variety of compounds, including nitrobenzene, bromobenzene, o-nitrophenol, salicylaldehyde, o-hydroxyacetophenone, essential oils, turpentine oil, and many others.
Detailed explanation-2: -Compounds which can be purified by steam distillation are: nitrobenzene, bromobenzene, o-nitrophenol, salicylaldehyde, o-hydroxyacetophenone, essential oils, turpentine oil etc.
Detailed explanation-3: -Steam distillation is a separation technique that harnesses the low boiling point property of immiscible mixtures. It is predominately used to separate temperature-sensitive organic molecules from a non-volatile contaminant. The organic molecule must be immiscible in water.
Detailed explanation-4: -Steam distillation is sometimes used in the chemical laboratory. Illustrative is a classic preparation of bromobiphenyl where steam distillation is used to first remove the excess benzene and subsequently to purifiy the bominated product.