Question

1. Match the column I with column II and mark the appropriate choice.

Column I		Column II
(A)	Pb(s) + SO42−(aq)→PbSO4(s) + 2e−	(i)	Rusting of iron
(B)	2SO4(aq)2−→S2O8(aq)2− + 2e−	(ii)	Reaction at anode in lead storage battery
(C)	2H2(g) + 4OH−(aq)→4H2O(l) + 4e−	(iii)	Electrolysis of concentrated H2SO4
(D)	2Fe(s) + O2(g) + 4H+(aq) → 2F(aq)2+ + 2H2O(l)	(iv)	Reaction at anode in fuel cell

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

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

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

Answer 1

Answer: (B)

(A) $\rightarrow$ (ii), (B) $\rightarrow$ (iii), (C) $\rightarrow$ (iv), (D) $\rightarrow$ (i)

Answer 2

1. (2)

Sol. (1) $\rightarrow$ (ii), (2) $\rightarrow$ (iii), (3) $\rightarrow$ (iv), (4) $\rightarrow$ (i)