Fuels and Combustion Naphthalene is used for making All of these Unsaturated polyesters Drug intermediates e.g. β-naphthol Insecticides (e.g. moth balls) All of these Unsaturated polyesters Drug intermediates e.g. β-naphthol Insecticides (e.g. moth balls) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of excess of combustion air in the combustion of fuels results in Heat losses None of these Condensation of water vapour from the fuel gas Long flame Heat losses None of these Condensation of water vapour from the fuel gas Long flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation Both A & B Neither A nor B Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Both A & B Neither A nor B Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg. 8000 1000 4000 15000 8000 1000 4000 15000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion L.D. converter gas (produced in steel plant) comprises mainly of CO₂ & H₂ CO₂ & O₂ CO & O₂ CO (upto 65%) & CO₂ CO₂ & H₂ CO₂ & O₂ CO & O₂ CO (upto 65%) & CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of combustion air is done to Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Complete the combustion of fuel Increase the adiabatic flame temperature Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Complete the combustion of fuel Increase the adiabatic flame temperature ANSWER DOWNLOAD EXAMIANS APP
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