Blister $Cu$ is about .......... $\%\, Cu$.

Identify the process of refining to obtain pig tin.

The pair of metals refined by "vapour phase refining" is

Which process of purification is represented by the following scheme?
$\text{Ti}_{\text{impure}} + 2I_2$ $\xrightarrow{250^{\circ}C} TiI_4$ $\xrightarrow{1400^{\circ}C} \text{Ti}_{\text{pure}} + 2I_2$

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

The reaction representing the $Mond$ process for metal refining is $............$.