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?
A1 only
B2 and 3 only
C4 only
D1, 2, 3 and 4
Answer & Solution
Correct answer: B. 2 and 3 only
UPSC CSE Prelims 2019 (GS-I, Set A), Q.43. Official answer key: B.
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