JEE MAIN - Chemistry (2004 - No. 35)

In a hydrogen – oxygen fuel cell, combustion of hydrogen occurs to :

generate heat

remove adsorbed oxygen from electrode surfaces

produce high purity water

create potential difference between the two electrodes

In $${H_2} - {O_2}$$ fuel cell, the combustion of $${H_2}$$ occurs to create potential difference between the two electrodes