Question

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

• A. Produce high purity water
• B. Create potential difference between the two electrodes
• C. Generate heat
• D. Remove adsorbed oxygen from electrode surfaces

Hint:

In fuel cells, the chemical reaction between hydrogen and oxygen produces electricity and water, with a potential difference created across the electrodes.

Answer 1

The Correct Option is B

In a hydrogen-oxygen fuel cell, hydrogen reacts with oxygen to create water and generate a potential difference between the two electrodes, producing electricity.
Final Answer: \[ \boxed{\text{Create potential difference between the two electrodes}} \]