Question

Match the column I with column II to match the method of extraction and mark the appropriate choice.

	Column I		Column II
(A)	Cu	(i)	Direct reduction of sulphide by heating
(B)	Sn	(ii)	Mond's Process
(C)	Hg	(iii)	Partial oxidation of sulphide ore
(D)	Ni	(iv)	Reduction of oxide with carbon

• A. (A)$\to$(iii), (B)$\to$ (i), (C)$\to$ (ii), (D)$\to$ (ii)
• B. (A)$\to$(iii), (B)$\to$ (iv), (C)$\to$ (i), (D)$\to$ (ii)
• C. (A)$\to$(i), (B)$\to$ (iii), (C)$\to$ (ii), (D)$\to$ (iv)
• D. (A)$\to$(iv), (B)$\to$ (i), (C)$\to$ (ii), (D)$\to$ (iii)

Answer 1

The correct option is B (A)$\to$(iii), (B)$\to$ (iv), (C)$\to$ (i), (D)$\to$ (ii)

Copper is extracted by partial oxidation of Sulphide ore.

$2{Cu}_{2}S+3O_2⟶2{Cu}_{2}O+2S{O}_2$

$2{Cu}_{2}O+{Cu}_{2}S⟶6Cu+S{O}_2$

Tin oxide on reaction with copper gives Tin and $C{O}_2$.

$Sn{O}_2+C⟶Sn+C{O}_2$

Mercury is extracted by roasting the Sulphide ore.

Nickel is by Mond process

$Ni+CO\underrightarrow{330K}Ni{\left(CO\right)}_4\underrightarrow{470K}Ni+4CO$