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:

(i) Distillation

(ii) Crystallisation

(iii) Distillation under reduced pressure

(iv) Steam distillation

Answers (1)

The answer is the option (iv) Steam distillation

Explanation: This is a technique which is applied to separate substances which are steam volatile and are immiscible with water, differently. In case of steam distillation, steam, from a steam generator is passed through a heated flask containing the liquid to be distilled. The mixture of steam and the volatile organic compound is then condensed and collected together. The compound is later separated from water using a separating funnel.

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