The cyanide complex of silver formed in the silver extraction in Mac-Arthur's Forrest cyanide process is

Highly electropositive metals cannot be commercially extracted by the carbon reduction process at high temperatures because these

Which methods are used for the extraction of $Pb$ and $Sn$ from their respective ores?

During the extraction of $Fe$,which reaction is performed in the combustion zone?

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 a molten mixture of $Al_2O_3$ 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:

Out of $C$ and $CO$,which is a better reducing agent for $ZnO$?