AIIMS 2003 Chemistry Fuel Cells MCQ Question
Which of the following reactions is used to make a fuel cell?
Cd (s) + 2 Ni(OH)₃ (s) → CdO (s) + 2 Ni(OH)₂ (s) + H₂O (l)
Pb (s) + PbO₂ (s) + 2 H₂SO₄ (aq) → 2 PbSO₄ (s) + 2 H₂O (l)
2 H₂ (g) + O₂ (g) → 2 H₂O (l)
2 Fe³⁺ (aq) + 4 H⁺ (aq) → 2 Fe²⁺ (aq) + 2 H₂O (l)
Correct Answer
Detailed Explanation
Fuel cells are galvanic cells in which chemical energy of fuels is directly converted into electrical energy.
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