The method of electrolytic refining is not suitable in the extraction of

The electrolyte solution in the electrolytic refining of lead contains:

The poling process is used for:

Formation of $Ni(CO)_4$ and its subsequent decomposition into $Ni$ and $CO$ (recycled) forms the basis of the Mond process.
$Ni + 4CO$ $\xrightarrow{T_1} Ni(CO)_4$ $\xrightarrow{T_2} Ni + 4CO$
$T_1$ and $T_2$ are:

Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?

Match the List-$I$ and List-$II$.

List-$I$	List-$II$
$A$. Van Arkel method	$P$. Purification of titanium
$B$. Solvay process	$Q$. Manufacture of $Na_2CO_3$
$C$. Bessemerisation	$R$. Reduction of copper
$D$. Hall-$H$éroult process	$S$. Extraction of aluminium