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Question

What is the basic principle behind fractional distillation?


A

Difference in the molecular weight of two or more miscible liquids should be 50g/mol

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B

Difference in the freezing points of the miscible liquids should be 30oC or more

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C

The liquids should decompose during the process of fractional distillation

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D

The difference in boiling points of two or more miscible liquids is less than 30oC

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Solution

The correct option is D

The difference in boiling points of two or more miscible liquids is less than 30oC


Fractional distillation is used to separate a mixture of two or more miscible liquids which boil without decomposition and for which the difference in boiling points is less than 30oC.


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