Environment & Ecology2019
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:
- The main advantage of the use of H-CNG is the
- H-CNG as fuel reduces carbon dioxide and hydrocarbon
- Hydrogen up to one-fifth by volume can be blended
- H-CNG makes the fuel less expensive than CNG.
Which of the statements given above is/are correct?
Explanation
The correct statements are 2 and 3. H-CNG, by blending hydrogen with compressed natural gas (CNG), indeed reduces carbon dioxide and hydrocarbon emissions due to hydrogen’s cleaner combustion properties, contributing to improved air quality. Additionally, hydrogen can be blended with CNG up to a volume of 20%, enhancing the fuel's efficiency and reducing reliance on fossil fuels. However, the assertion that H-CNG makes fuel less expensive than CNG is not accurate, as the production and infrastructure costs for hydrogen may not provide immediate economic savings, thus invalidating statement 4.