Fuels and Combustion
Calorific value of

N-paraffin is lower than that of iso-paraffins of the same compounds
Light paraffinic fuel oils is equal to that of equivalent olefins
Light paraffinic fuel oils is higher than that of equivalent olefins
Light paraffinic fuel oils is lower than that of equivalent olefins

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

All of these
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
Methane content in the coke oven gas decreases and carbon monoxide content increases

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