Question

Match the items of List-I with those of List-II and choose the correct option given below.

List $-I$		List $-II$
a	Calcination	i	galena
b	Roasting	ii	Magnetite
c	Magnetic separation	iii	Pyrometallurgy
d	Carbon reduction of metal	iv	Malachite

• A. $a)\to (iv),b)\to (i),c)\to (iii),d)\to (ii)$
• B. $a)\to (iv),b)\to (i),c)\to (ii),d)\to (iii)$
• C. a) \rightarrow(ii), b) \rightarrow(iv), c) \rightarrow(iii), d) \rightarrow(ii)$
• D. a) \rightarrow(iii), b) \rightarrow(ii), c) \rightarrow(i), d) \rightarrow(iv)$

Answer 1

Answer: (B)

(A) Calcination For hydrated carbonate or bicarbonate ores $\Rightarrow (4)$
malachite, $CuC{O}_3\cdot Cu(OH{)}_2$
(B) Roasting For sulphide ores $\Rightarrow (1)$ galena, $PbS$
(C) Magnetic separation For magnetic ore or gangue $\Rightarrow (2)$ magnetite, $F{e}_3{O}_4$
(D) Carbon reduction of metal oxide It is done is furnaces on application
of heat $\Rightarrow (3)$ pyrometallurgy
The correct matching is $(A)-(4),(B)-(1),(C)-(2),(D)-(3)$