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Solution


Q.

The technique used for purification of steam volatile water immiscible substances is:              [2024]
1 frictional distillation  
2 fractional distillation under reduced pressure  
3 distillation  
4 steam distillation  

Ans.

(4)

Process of steam distillation is used for its purification. The vapours of steam and the liquid compound come out of the heated flask and are condensed and collected in a separate flask. As the liquid is immiscible with water (in liquid phase), these two form separate layers and are separated using a separating funnel.