Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationPurification of Organic Compounds
MediumState whether the following statements regarding fractional distillation are True or False:
$(i)$ The freezing of vapour of a liquid with a high boiling point takes place first.
$(ii)$ In the column,the more volatile liquid is present in a higher concentration in the vapour phase at higher levels.
$(iii)$ The condensed liquid flows down and provides heat to the vaporizing liquid.
$(iv)$ The liquid with the highest boiling point reaches the top of the column.
$(i)$ The freezing of vapour of a liquid with a high boiling point takes place first.
$(ii)$ In the column,the more volatile liquid is present in a higher concentration in the vapour phase at higher levels.
$(iii)$ The condensed liquid flows down and provides heat to the vaporizing liquid.
$(iv)$ The liquid with the highest boiling point reaches the top of the column.
(N/A) $(i)$ False,$(ii)$ True,$(iii)$ True,$(iv)$ False.
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Which of the following can be purified by sublimation?
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View SolutionUsing the given figure,the ratio of $R_f$ values of sample $A$ and sample $C$ is $x \times 10^{-2}$. The value of $x$ is . . . . . . . .
Table: Paper chromatography of Samples
| Component | Distance from base line (cm) |
| :--- | :--- |
| Sample $A$ | $5.0$ |
| Sample $B$ | $6.5$ |
| Sample $C$ | $10.0$ |
| Solvent front | $12.5$ |
Table: Paper chromatography of Samples
| Component | Distance from base line (cm) |
| :--- | :--- |
| Sample $A$ | $5.0$ |
| Sample $B$ | $6.5$ |
| Sample $C$ | $10.0$ |
| Solvent front | $12.5$ |
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View SolutionMatch items of Column-$I$ and Column-$II$.
Column-$I$ (Mixture of compounds)
Column-$II$ (Separation Technique)
$A$. $H_2O / CH_2Cl_2$
$I$. Crystallization
$B$. $\alpha$-tetralone / $p$-nitrophenol
$II$. Differential solvent extraction
$C$. Kerosene / Naphthalene
$III$. Column chromatography
$D$. $C_6H_{12}O_6 / NaCl$
$IV$. Fractional Distillation
Correct match is:
| Column-$I$ (Mixture of compounds) | Column-$II$ (Separation Technique) |
|---|---|
| $A$. $H_2O / CH_2Cl_2$ | $I$. Crystallization |
| $B$. $\alpha$-tetralone / $p$-nitrophenol | $II$. Differential solvent extraction |
| $C$. Kerosene / Naphthalene | $III$. Column chromatography |
| $D$. $C_6H_{12}O_6 / NaCl$ | $IV$. Fractional Distillation |
Correct match is:
DifficultJEE MAIN 2023
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