Fuels and Combustion
Naphthalene is removed from coke oven gas by

Scrubbing with wash oil (a petroleum product)
None of these
Adsorbing on bog iron bed
Absorbing in vetro-coke solution

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

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