Which of the following is a drawback to use of hydrogen fuel cells?

Do not work at low temperatures

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Requires catalyst

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It does not have any drawbacks

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Both

A

and

B

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Solution

The correct option is D Both $A$ and $B$
Hydrogen fuel cells does not work at very low temperatures, and they may also require a platinum catalyst (platinum is expensive and prone to contamination by impurities).

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