Question

what combines hydrogen and oxygen to produce water, and in the process produces electricity and heat?

a. biodiesel
b. biofuels
c. fuel cell
d. biobutanol

Explanation:

• Biodiesel is a fuel made from biological sources like vegetable oils or animal fats. It does not combine hydrogen and oxygen to produce water while generating electricity and heat.
• Biofuels is a general term for fuels derived from biomass. It does not specifically refer to a device that combines hydrogen and oxygen to produce water, electricity, and heat.
• A fuel cell is an electrochemical device that combines hydrogen and oxygen (usually from the air). The chemical reaction between hydrogen and oxygen produces water, and in the process, it generates electricity and heat.
• Biobutanol is an alcohol fuel produced from biomass. It does not combine hydrogen and oxygen in the way described in the question.

Answer:

C. Fuel cell