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A fuel cell is :...

A fuel cell is :

A

The voltic cells in which continuous supply of fuels are send at anode to give oxidation

B

The voltaic cell in which fuels such as,`CH_4, H_2, CO` are used up at anode

C

It involves the reaction of`H_2 -O_2` fuel cell such as :
Anode : `2H_2 +4OH^- rarr 4H_2O(l)+4e`
Cathode:`O_2 +2H_2O(l) + 4e rarr4OH^-`

D

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The correct Answer is:
D
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