During the process of electrolytic refining of copper,some metals present as impurity settle as 'anode mud'. These are

The cupellation process is used in the metallurgy of:

When an impurity in a metal has greater affinity for oxygen and is more easily oxidised than the metal itself,the metal is refined by:

Explain the zone refining process or explain refining by fractional crystallization.

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 method of purification is represented by the following equation?
$Ti_{(s)} + 2I_{2(g)}$ $\xrightarrow{523 \ K} TiI_{4(g)}$ $\xrightarrow{1700 \ K} Ti_{(s)} + 2I_{2(g)}$