Which method is used to purify liquids having very high boiling points and liquids which decompose at or below their boiling point?

Given below are two statements:
Statement $I$: $A$ mixture of $C_{12}H_{22}O_{11}$ (sugar) and $NaCl$ can be separated by dissolving sugar in alcohol,due to differential solubility.
Statement $II$: Rose essence from rose petals is separated by steam distillation due to its high volatility and insolubility in $H_2O$.

Which of the following compounds can be separated by the steam distillation method?

Explain the process of steam distillation.

When the difference in boiling points of two liquids is very small,the separation is carried out by:

Two products $X$ and $Y$ are formed in the following reaction sequence: Benzene + $CH_3Cl \xrightarrow{Anhydr. AlCl_3} W \xrightarrow{dil. HNO_3/dil. H_2SO_4, warm} X + Y$. The suitable method that can be used for the separation of products $X$ and $Y$ is: