Class 11Chemistry3 Organic Chemistry: Purification and CharacterisationPurification of Organic Compounds
MediumWhich of the following statements are correct?
$A$. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
$B$. Aniline is purified by steam distillation as it is immiscible in water.
$C$. Ethanol can be separated from an ethanol-water mixture by azeotropic distillation because it forms an azeotrope.
$D$. An organic compound is pure if the mixed $M.P.$ remains the same.
Choose the most appropriate answer from the options given below:
$A$. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
$B$. Aniline is purified by steam distillation as it is immiscible in water.
$C$. Ethanol can be separated from an ethanol-water mixture by azeotropic distillation because it forms an azeotrope.
$D$. An organic compound is pure if the mixed $M.P.$ remains the same.
Choose the most appropriate answer from the options given below:
- A$A, B, C$ only
- B$A, C, D$ only
- C$B, C, D$ only
- D$A, B, D$ only
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Similar Questions
Give the information of the following in short.
$(i)$ Fractional column $(ii)$ Theoretical plate $(iii)$ Mechanism of fractional column.
$(i)$ Fractional column $(ii)$ Theoretical plate $(iii)$ Mechanism of fractional column.
Medium
View SolutionGiven below are two statements:
Statement $I$: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation.
Statement $II$: The vapours rising up in the fractionating column become richer in high boiling component of the mixture.
Statement $I$: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation.
Statement $II$: The vapours rising up in the fractionating column become richer in high boiling component of the mixture.
Give a brief description of the principles of the following techniques taking an example in each case. $(a)$ Crystallisation $(b)$ Distillation $(c)$ Chromatography
Difficult
View SolutionMatch List-$I$ with List-$II$:
List-$I$ $(\text{Mixture})$ List-$II$ $(\text{Method of Separation})$ $A. CHCl_3 + C_6H_5NH_2$ $I. \text{Distillation under reduced pressure}$ $B. \text{Crude oil in petroleum industry}$ $II. \text{Steam distillation}$ $C. \text{Glycerol from spent-lye}$ $III. \text{Fractional distillation}$ $D. \text{Aniline-water}$ $IV. \text{Simple distillation}$
Choose the correct answer from the options given below:
| List-$I$ $(\text{Mixture})$ | List-$II$ $(\text{Method of Separation})$ |
|---|---|
| $A. CHCl_3 + C_6H_5NH_2$ | $I. \text{Distillation under reduced pressure}$ |
| $B. \text{Crude oil in petroleum industry}$ | $II. \text{Steam distillation}$ |
| $C. \text{Glycerol from spent-lye}$ | $III. \text{Fractional distillation}$ |
| $D. \text{Aniline-water}$ | $IV. \text{Simple distillation}$ |
Choose the correct answer from the options given below:
DifficultNEET 2025
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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