Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationPurification of Organic Compounds
DifficultIn the given $TLC$ plate,the distances of spots $A$ and $B$ from the base line are $4 \ cm$ and $6 \ cm$,respectively. The distance moved by the solvent front from the base line is $8 \ cm$. If the $R_f$ value of $B$ is $x \times 10^{-1}$ times that of $A$,find the value of $x$.
- A$10$
- B$15$
- C$20$
- D$25$
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View SolutionMatch 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 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
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