Question
Chemistry Question on Electrochemistry
In fuel cell ___ are used as catalysts.
A
Zinc - Mercury
B
Platinum - Palladium
C
Lead - Manganese
D
Nickel - Cadmium
Answer
Platinum - Palladium
Explanation
Solution
Fuel cells are electrochemical devices that convert the chemical energy of a fuel, such as hydrogen, into electrical energy through an oxidation-reduction (redox) reaction.
Catalysts are used to facilitate the redox reactions occurring at the electrodes of the fuel cell. Platinum and palladium are commonly used as catalysts in fuel cells due to their high catalytic activity, stability, and resistance to corrosion.
Therefore, the correct answer is (B) Platinum - Palladium.