Out of the following fuels, the difference between the net and gross calorific value is maximum in case of_________________?
Correct answer: B. Fuel oil
- A. Pitch
- B. Fuel oil
- C. Blast furnace gas
- D. Bituminous coal
Explanation
The difference between gross and net calorific value is mainly the latent heat of water formed from hydrogen during combustion. Fuel oil generally contains more hydrogen than the listed coal and pitch, while blast-furnace gas has little hydrogen, so fuel oil gives the greatest difference.
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