Suggest a method for the purification of camphor contaminated with salt.

The boiling point of aniline is $457 \ K$. At which temperature does aniline boil in simple distillation and in steam distillation?

Which one of the following techniques is not used to spot components of a mixture separated on a thin layer chromatographic plate?

The purification method based on the following physical transformation is $:$
$\text{Solid} (X)$ $\xrightarrow{\text{Heat}} \text{Vapour} (X)$ $\xrightarrow{\text{Cool}} \text{Solid} (X)$

How will you separate a mixture of two organic compounds which have different solubilities in the same solvent?

Aniline is separated from a mixture by