Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationPurification of Organic Compounds
DifficultThe 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 the vapour phase. $A$ suitable method for the extraction of these oils from the flowers is:
- Acrystallisation
- Bdistillation under reduced pressure
- Cdistillation
- Dsteam distillation
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Similar Questions
Match List-$I$ with List-$II$.
List-$I$ (Purification technique) List-$II$ (Used to separate) $A$. Simple distillation $I$. Steam volatile compound $B$. Fractional distillation $II$. Two liquids with large difference in boiling points $C$. Steam distillation $III$. Liquid decomposing at its boiling point $D$. Distillation under reduced pressure $IV$. Two liquids with close boiling points
| List-$I$ (Purification technique) | List-$II$ (Used to separate) |
| $A$. Simple distillation | $I$. Steam volatile compound |
| $B$. Fractional distillation | $II$. Two liquids with large difference in boiling points |
| $C$. Steam distillation | $III$. Liquid decomposing at its boiling point |
| $D$. Distillation under reduced pressure | $IV$. Two liquids with close boiling points |
The fragrance of flowers is due to the presence of some steam-volatile organic compounds. These compounds are known as essential oils. At room temperature,these oils are insoluble in water but are miscible with water vapor. Name the suitable method for the extraction of these oils from flowers.
Easy
View SolutionAniline is usually purified by
Medium
View SolutionThe mixture of compounds $A$ and $B$ is passed through a column of $Al_2O_3$ by using alcohol as eluant. Compound $A$ is eluted in preference to compound $B$. Which of the compounds $A$ or $B$ is more readily adsorbed on the column?
Medium
View SolutionDescribe the crystallisation technique used for the purification of organic compounds.
Medium
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