Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationPurification of Organic Compounds
EasyWhen is distillation under reduced pressure used?
- AWhen the liquid has a high boiling point and decomposes at or below its boiling point.
- BWhen the liquid has a very low boiling point.
- CWhen the liquid is insoluble in water.
- DWhen the liquid is insoluble in organic solvents.
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Write about thin layer chromatography $(TLC)$.
Compare the pressure of aniline and water in vapour phase distillation.
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View SolutionThe distillation technique most suited for separating glycerol from spent-lye in the soap industry is:
Match 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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