Class 11Chemistry3 Organic Chemistry: Purification and CharacterisationPurification 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
Explore More
Similar Questions
What is mother liquor?
Easy
View SolutionGiven below are two statements $:$
Statement $(I) :$ In partition chromatography,stationary phase is a thin film of liquid present on an inert support.
Statement $(II) :$ In paper chromatography,the material of the paper acts as a stationary phase.
In the light of the above statements,choose the correct answer from the options given below $:$
Statement $(I) :$ In partition chromatography,stationary phase is a thin film of liquid present on an inert support.
Statement $(II) :$ In paper chromatography,the material of the paper acts as a stationary phase.
In the light of the above statements,choose the correct answer from the options given below $:$
The correct match between items of List-$I$ and List-$II$ is:
List-$I$ List-$II$ $A$. Coloured impurity $P$. Steam distillation $B$. Mixture of $o$-nitrophenol and $p$-nitrophenol $Q$. Fractional distillation $C$. Crude oil $R$. Charcoal treatment $D$. Mixture of glycerol and sugars $S$. Distillation under reduced pressure
| List-$I$ | List-$II$ |
| $A$. Coloured impurity | $P$. Steam distillation |
| $B$. Mixture of $o$-nitrophenol and $p$-nitrophenol | $Q$. Fractional distillation |
| $C$. Crude oil | $R$. Charcoal treatment |
| $D$. Mixture of glycerol and sugars | $S$. Distillation under reduced pressure |
Medium
View SolutionGiven below are two statements:
Statement-$I$: Retardation factor $(R_f)$ can be measured in $meter/centimeter$.
Statement-$II$: $R_f$ value of a compound remains constant in all solvents.
Choose the most appropriate answer from the options given below:
Statement-$I$: Retardation factor $(R_f)$ can be measured in $meter/centimeter$.
Statement-$II$: $R_f$ value of a compound remains constant in all solvents.
Choose the most appropriate answer from the options given below:
To separate different fractions of crude oil in the petroleum industry,the method used is:
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo