Question

hydrogen has been used as _________ fuel​

Answer 1

Answer:

Rocket

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Answer 2

Answer:

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this is your answer.......

spacecraft propulision.......

Explanation:

Hydrogen fuel is a zero-emission fuel burned with oxygen. It can be used in fuel cells or internal combustion engines . It has begun to be used in commercial fuel cell vehicles such as passenger cars, and has been used in fuel cell buses for many years. It is also used as a fuel for spacecraft propulsion.

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