For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg) ?
Correct answer: D
Explanation
B.F gas and coke oven gas are known to have this specific relationship between their calorific values on volume and weight basis.