Fuels and Combustion
Out of the following fuels, the difference between gross and net calorific value will be minimum in case of

Blast furnace gas
Coke oven gas
Water gas
Natural gas

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Fuels and Combustion
Sometimes water is sprayed during coal charging in the coke oven, which helps in

Controlling the dust nuisance while charging the coal
Prevention of clinker formation in the oven
Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)
All of these

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