The technique used for purification of steam volatile water immiscible substances is:

State whether the following statements are True or False:
$(i)$ The boiling points of chloroform and aniline are $334 \ K$ and $457 \ K$ respectively.
$(ii)$ The vapour of chloroform is obtained after aniline in simple distillation.
$(iii)$ Chloroform is more volatile than aniline.

Using 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 | $12.5$ |

Which of the following statements about $TLC$ are correct?
$(i)$ Glycine is identified on $TLC$ plate due to its colour.
$(ii)$ Amino acids can be detected by spraying the $TLC$ plate with $Ninhydrin$ solution.
$(iii)$ The retardation factor $(R_f)$ is the ratio of the distance travelled by the solute to that of the solvent from the base line.
$(iv)$ Sodium chloride is commonly used as an adsorbent.

The best and latest technique for isolation,purification and separation of organic compounds is:

On which principle does the solute move on chromatography paper?