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The life time of the fuel cells is __________

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The life time of the fuel cells is __________

(a) 10 years

(b) 20 years

(c) 30 years

(d) Not known

I had been asked this question in an online quiz.

My question is based upon Biomass and Biofuel in chapter Non Conventional Energy Sources and Storage Devices of Applied Chemistry

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Correct answer is (d) Not known

The explanation is: The life time of the fuel cells is not known accurately. It is one of the limitations of the fuel cells. Their initial cost is high.

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