A. Insufficient supply of combustion air and insufficient time for combustion B. Poor quality of fuel and improper mixing of fuel & combustion air C. Poor design & overloading of furnace D. All a., b. and c.
A. Conversion of co into co2 in the second compartment B. Conversion of nox into n2 and nh3 in the first compartment C. Oxidation of unburnt hydrocarbon fuel in the second compartment D. All a., b. and c.
