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Which of the following is the advantage of the hydrogen as a fuel?

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Which of the following is the advantage of the hydrogen as a fuel?

(a) High volumetric efficiency

(b) Low fuel cost

(c) No HC and CO emissions

(d) Relatively safe

This question was posed to me during an online exam.

My question is taken from Alternative Fuels for IC Engines in portion Alternative Energy Sources of Automobile Engineering

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The correct answer is (c) No HC and CO emissions

The best explanation: The advantage of hydrogen fuel is no hydrocarbon and CO emissions. The most exhaust gases would be H2O and N2 and NOx.

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