Fuels and Combustion
The internal energy of the combustion products is __________ compared to that of reactants.

More
More or less ; (depends on the state of fuel.)
Less
Equal

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

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)
Controlling the dust nuisance while charging the coal
Prevention of clinker formation in the oven
All of these

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Fuels and Combustion
Anthracite can be used for

All of these
Making carbon electrodes
Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke
Recarbonising steel

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