Fuels and Combustion
With increase in the temperature of carbonisation of coal

Methane content in the coke oven gas decreases and carbon monoxide content increases
Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content
Hydrogen content of coke oven gas increases due to cracking of hydrocarbons
All of these

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