Attempt this previous-year question. The correct option stays hidden until you choose.
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 the 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?
Pick an option to check yourself.
• Correct Answer: B
• H-CNG reduces CO2 and hydrocarbon emissions compared to pure CNG; hydrogen can be blended up to 20% (one-fifth) by volume for bus engines.
• Wrong options are incorrect: CO is reduced but not eliminated; H-CNG is more expensive than CNG due to energy-intensive hydrogen production.
Attempt Prelims MCQs or open Mains questions by paper — then continue the same bank inside the app with visual decks.
GyanGram