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Solution


Q.

The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:            [2024]
1 distillation  
2 crystallisation  
3 steam distillation  
4 distillation under reduced pressure  

Ans.

(3)

Steam distillation is applied to separate substances which are steam volatile and are immiscible with water. Thus essential oils are extracted from flowers using this technique.