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The percentage of the energy conversion of the fuel cells is about ____________

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The percentage of the energy conversion of the fuel cells is about ____________

(a) 20-30

(b) 45-52

(c) 75-82

(d) 82-95

The question was posed to me during an internship interview.

I would like to ask this question from Biomass and Biofuel in section Non Conventional Energy Sources and Storage Devices of Applied Chemistry

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Correct option is (c) 75-82

The explanation: The percentage of the energy conversion of the fuel cells is about 75 to 82. The product obtained in the most fuel cells is water and it is used as the drinking water by astronauts.

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