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: A. Propane and acetylene
- A. Propane and acetylene
- B. Propane and LPG
- C. Sewage gas and gobar gas
- D. B.F. gas and coke oven gas
Explanation
Propane and acetylene have nearly equal calorific values per unit mass, but propane has a higher mass per normal cubic metre, giving it an approximately doubled volumetric calorific value. The other pairs do not show this combination as closely.
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