Which alloy contains a non-metal?

Which of the following statements is correct?

Bronze is a mixture of . . . . . . metals.

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(a)$ Sodium Carbonate	$(i)$ Deacon
$(b)$ Titanium	$(ii)$ Castner-Kellner
$(c)$ Chlorine	$(iii)$ Van-Arkel
$(d)$ Sodium hydroxide	$(iv)$ Solvay

Choose the correct answer from the options given below:

The correct statement$(s)$ related to the metal extraction processes is(are):
$(A)$ $A$ mixture of $PbS$ and $PbO$ undergoes self-reduction to produce $Pb$ and $SO_2$.
$(B)$ In the extraction process of copper from copper pyrites,silica is added to produce copper silicate.
$(C)$ Partial oxidation of sulphide ore of copper by roasting,followed by self-reduction produces blister copper.
$(D)$ In the cyanide process,zinc powder is utilized to precipitate gold from $Na[Au(CN)_2]$.

The form of iron having the highest carbon content is