Among the following statemetns, the incorrect one is :

In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to :

Refining of nickel is done by:

Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$

Assertion $(A) :$ Aluminium is extracted from bauxite by the electrolysis of molten mixture of $\mathrm{Al}_{2} \mathrm{O}_{3}$ with cryolite.

Reason $(R):$ The oxidation state of $Al$ in cryolite is $+3$.

In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following metal is correctly matched with its ore:

Metal $\rightarrow $ Ore