In the context of proposals to the use of hydrogen-enriched CNG (H-CNG) as fuel for buses in public transport, consider the following statements: I. The main advantage of the use of H-CNG is the elimination of carbon monoxide emissions. II. H-CNG as fuel reduces carbon dioxide and hydrocarbon emissions. III. Hydrogen up to one-fifth by volume can be blended with CNG as fuel for buses. IV. H-CNG makes the fuel less expensive than CNG. Which of the statements given above is/are correct?

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CollectorBabu · Accepted Answer

Correct Answer: 2 and 3 only. Only statements 2 and 3 are correct. When compared to conventional CNG, use of H-CNG reduces emission of carbon monoxide up to 70%, not completely eliminate its emission. There’s 5% of fuel savings when we use H-CNG instead of conventional CNG but the savings are negligible on larger scale, hence statement 4 is incorrect.

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