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Question

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


Column I
Column II
(A)Pb(s)+SO24(aq)PbSO4(s)+2e(i)Rusting of iron
(B)2SO24(aq)S2O28(aq)+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)2Fe2+(aq)+2H2O(l)(iv)Reaction at anode in fuel cell

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

The correct option is B (A) (ii), (B) (iii), (C) (iv), (D) (i)$
Anode- Oxidation takes place
Pb(s)+SO24(aq)PbSO4(s)+2e
Fuel cell formation of H2O takes place from H2 and O2
2H2+4OH4H2O+4e
Electrolysis of concentrated H2SO4
At anode oxidation takes place.
2SO24S2O28+2e
During rusting, FeFe2+ state.

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