The cupellation process is used in the metallurgy of:

Which method of purification is represented by the equation
$Ti + 2I_2$ (Impure) $\xrightarrow{500 \ K} TiI_4$ $\xrightarrow{1675 \ K} Ti + 2I_2$ (Pure)

Match the following:
| List-$I$ (Refining Methods) | List-$II$ (Metal to be refined) |
| :--- | :--- |
| $(A)$ Zone refining | $(I)$ Titanium |
| $(B)$ Poling | $(II)$ Tin |
| $(C)$ Liquation | $(III)$ Gallium |
| $(D)$ Vapour phase refining | $(IV)$ Copper |

Zone refining is a method to obtain

Which of the following elements is extracted using $I_2$ as the reactant?

In the electrolytic refining of metals,the electrolysis of an aqueous solution of its complex salt is performed using an impure metal as the anode and a strip of pure metal as the cathode. This method cannot be used for the refining of which of the following metals?