B. Cooling and freezing of water kills the bacteria present in it C. With increasing boiler operating pressure of steam, the maximum allowable concentration of SilIca in feed water goes on decreasing D. Dissolved oxygen content in high pressure boiler feed water should be nil
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.
