MHT CET Chemistry question

Which of the following reaction is used to make a fuel cell? [AIIMS 2003]

(A)\mathrm{Cd_{(s)} + 2Ni(OH)_{3(s)} \rightarrow CdO_{(s)} + 2Ni(OH)_2 + H_2O_{(l)}}
(B)\mathrm{Pb_{(s)} + PbO_{2(s)} + 2H_2SO_{4(aq)} \rightarrow 2PbSO_{4(s)} + 2H_2O_{(l)}}
(C)Correct
(D)

Answer: (C)

Solution

A fuel cell uses continuously supplied fuel and oxidant, as in 2H2 + O2 → 2H2O; (a) is the Ni-Cd secondary

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Question ID VK-066795