1.

In H_2 - O_2 fuel cell the reaction occur at cathode is …………… .

Answer»

`O_2(G) + 2H_2O (l) + 4E^(-) to 4OH^(-)(aq) `
`H^+(aq) + OH^(-) (aq) to H_2O(l)`
`2H_2(g) + O_(2)(g) to 2H_2O(g)`
`H^+ + E^(-) to 1//2 H_2`

Answer :A


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