Steel becomes soft and pliable by:

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

In electrorefining of copper,some gold is produced as

Given below are two statements.
Statement $I:$ During electrolytic refining,blister copper deposits precious metals.
Statement $II:$ In the process of obtaining pure copper by electrolysis method,blister copper is used to make the anode.
In the light of the above statements,choose the most appropriate answer from the options given below.

Refining of silver is done by :

Bessemer converter is used in the refining of