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How will you separate a mixture …

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How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25°C), which are miscible with each other?

Posted by Shubham Kumar 4 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years, 3 months ago

Fractional Distillation:

Principle: This method is used for the separation of a mixture containing two miscible liquids, for which the difference in their boiling points is less than 25o C.

Technique: The mixture is kept in a distillation flask attached with a fractionating column, having glass beads. The flask is then carefully heated. The mixture first evaporates and later condenses. The glass beads present in the fractional column provide a larger surface area for the vapours to cool down. This technique is used to separate mixtures made up of two miscible liquids with a difference in their boiling points less than 25oC.

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