The methods chiefly used for the reduction of ores of lead and tin are respectively.

Q. $Pb$ and $Sn$ are extracted from their chief ore galena and cassiterite by:

Q. Among the following processes, how many are employed for the extraction of lead from ore galena?

Q. Column I contains different metal and column II contains different method of process that may be used in metallurgy of column I metal. Match column I with column II.

	Column I		Column II
(A)	Sn	(P)	Self reduction
(B)	Zn	(Q)	Carbon reduction
(C)	Lead	(R)	Parke’s process
(D)	Silver	(S)	Poling
		(T)	Electrolytic refining

Q. What is the appropriate order of processes for the extraction of lead from Galena?
A) Froth flotation B) Calcination C) Roasting D) Self Reduction E) Electrolytic Reduction F) Smelting