Match the extraction process listed in column I with metals listed in column II.

Column I Column II

A. Self reduction P. Lead

B. Carbon reduction Q. Silver

C. Complex formation and displacement by metal R. Copper

D. Electrolytic reduction S. Sodium

A \to P, R; B \to P; C \to Q; D \to S

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A \to P; B \to P, R; C \to Q; D \to S

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A \to Q; B \to S, R; C \to Q; D \to P

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A \to R, S; B \to P; C \to Q; D \to R

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Solution

The correct option is A $A \to P, R; B \to P; C \to Q; D \to S$
$A \to P, R$
$2 P b S + 3 O_{2} \to 2 P b O + 2 S O_{2};$
$2 P b O + P b S \to 3 P b + S O_{2}$
$2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2};$
$C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}$

$B \to P$
$P b O + C \to P b + C O; P b O + C O \to P b + C O_{2}$

$C \to Q$
$A g_{2} S + 4 N a C N \to 2 N a [A g (C N)_{2}] + N a_{2} S;$
$2 N a [A g (C N)_{2}] + Z n \to N a_{2} [Z n (C N)_{4} s o l u b l e] + 2 A g$

$D \to S$

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	Column I		Column II
(A)	Highly electropositive metals	(i)	Carbon reduction
(B)	Copper	(ii)	CO reduction
(C)	Iron	(iii)	Self reduction
(D)	Zinc	(iv)	Electrolysis

Column-I (Metal to be extracted)	Column-II (Method used for reduction of oxide)
(A) Iron or Zinc	(i) Reduction with aluminium
(B) Manganese or Chromium	(ii) Reduction with Carbon
(C) Mercury	(iii) Electrolytic reduction
(D) Aluminium	(iv) Reduction of heating alone

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Column I	Column II
A. Self reduction	P. Lead
B. Carbon reduction	Q. Silver
C. Complex formation and displacement by metal	R. Copper
D. Electrolytic reduction	S. Sodium