SELECT * FROM question_mgmt as q WHERE id=660 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=9 AND chapterId=58 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

Suggest two materials other than hydrogen that can be used as fuels in fuel cells.

Answer:

Fuel cells are voltaic cells in which the reactants are continuously supplied to the electrodes. They convert the energy from the combustion of fuels like Hydrogen, CO, Methane directly into electrical energy. Methane, oxygen, carbon monoxide and methanol can be used as fuels in fuel cells.

= 9 [ka2]

Hence, the rate of formation will increase by 9 times.


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  • Answered by Ekta Mehta
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