$A$ mixture of three compounds $A, B, C$ is passed through a column of $Al_2O_3$ by using alcohol as eluant. The order in which they are eluted out of the column is $C, B, A$. Which of the following statements is true?

Which of the following organic compounds could not be dried by anhydrous $CaCl_{2}$?

Match Column-$I$ and Column-$II$ with correct relation:

Column-$I$	Column-$II$
$(i)$ Differential extraction	$(p)$ High difference of boiling point
$(ii)$ Steam distillation	$(q)$ Separatory funnel
$(iii)$ Distillation at low pressure	$(r)$ Component of petroleum
$(iv)$ Simple distillation	$(s)$ Liquid decompose at high temperature
$(v)$ Fractional distillation	$(t)$ Vacuum pump

State whether the following statements regarding fractional distillation are True or False:
$(i)$ The freezing of vapour of a liquid with a high boiling point takes place first.
$(ii)$ In the column,the more volatile liquid is present in a higher concentration in the vapour phase at higher levels.
$(iii)$ The condensed liquid flows down and provides heat to the vaporizing liquid.
$(iv)$ The liquid with the highest boiling point reaches the top of the column.

Match List-$I$ with List-$II$:

List-$I$ (Mixture)	List-$II$ (Separation Technique)
$A$. $CHCl_3 + C_6H_5NH_2$	$I$. Steam distillation
$B$. $C_6H_{14} + C_5H_{12}$	$II$. Differential extraction
$C$. $C_6H_5NH_2 + H_2O$	$III$. Distillation
$D$. Organic compound in $H_2O$	$IV$. Fractional distillation

The latest technique for the purification of organic compounds is