Which of the following reaction is reaction is used to make a fuel cell .A. `Cd(s)+2Ni(OH)_(3)(s)rarrCuO(s)+ 2Ni(OH)_(@)+H_(2)O(l)`B. `Pb(s)+PbO_(2)(s)+ 2H_(2)SO_(4)(aq)rarr2PbSO_(4)(s)+2H_(2)O(l)`C. `2H_(2)(g) +O_(2)(g)rarr2H_(2)O(l)`D. `2Fe(s)+O_(2)(g)+4H^(+) (aq)rarr2Fe^(2+)(aq)+2H_(2)O(l)`

Which of the following reaction is reaction is used to make a fuel cel

1.	Which of the following reaction is reaction is used to make a fuel cell .A. `Cd(s)+2Ni(OH)_(3)(s)rarrCuO(s)+ 2Ni(OH)_(@)+H_(2)O(l)`B. `Pb(s)+PbO_(2)(s)+ 2H_(2)SO_(4)(aq)rarr2PbSO_(4)(s)+2H_(2)O(l)`C. `2H_(2)(g) +O_(2)(g)rarr2H_(2)O(l)`D. `2Fe(s)+O_(2)(g)+4H^(+) (aq)rarr2Fe^(2+)(aq)+2H_(2)O(l)`
Answer» Correct Answer - C Chemical reaction in a fuel cell is `2H_(2)(g)+O_(2)(g)rarr2H_(2)O(l)`

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What are elementary reactions ?

Which of the following reaction is reaction is used to make a fuel cell .A. `Cd(s)+2Ni(OH)_(3)(s)rarrCuO(s)+ 2Ni(OH)_(@)+H_(2)O(l)`B. `Pb(s)+PbO_(2)(s)+ 2H_(2)SO_(4)(aq)rarr2PbSO_(4)(s)+2H_(2)O(l)`C. `2H_(2)(g) +O_(2)(g)rarr2H_(2)O(l)`D. `2Fe(s)+O_(2)(g)+4H^(+) (aq)rarr2Fe^(2+)(aq)+2H_(2)O(l)`

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