Multiple choice

Gas with the highest calorific value is __________.

  1. methane gas

  2. hydrogen gas

  3. ethane gas

  4. biogas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydrogen gas has the highest calorific value among all fuels at approximately 142 kJ/g, significantly higher than methane (~55 kJ/g), ethane (~52 kJ/g), or biogas (~20-25 kJ/g). Option B correctly identifies hydrogen as having the highest calorific value. Option A (methane) has a high calorific value but not the highest. Options C and D have lower calorific values compared to hydrogen.

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