Question
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:
1. The main advantage of the use of H-CNG is elimination of carbon monoxide emissions.
2. H-CNG as fuel reduces carbon dioxide and hydrocarbon emissions.
3. Hydrogen up to one-fifth by volume can be blended with CNG as fuel for buses.
4. H-CNG makes the fuel less expensive than CNG.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 4 only
(d) 1, 2, 3 and 4
Answer:
B
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Explanation:
Statement 1 is incorrect. While the use of hydrogen-enriched CNG (H-CNG) can reduce carbon monoxide emissions, it is not the main advantage. H-CNG primarily aims to reduce carbon dioxide and hydrocarbon emissions.
Statement 2 is correct. H-CNG as fuel has the advantage of reducing carbon dioxide and hydrocarbon emissions, which are major contributors to air pollution and climate change.
Statement 3 is correct. Hydrogen can be blended with CNG in concentrations of up to one-fifth by volume to create H-CNG as a fuel for buses.
Statement 4 is not mentioned and therefore cannot be assumed. The cost of H-CNG compared to CNG can vary depending on factors such as production methods, availability, and infrastructure requirements.