Fuels and Combustion Preheating of __________ the flame temperature. Combustion air decreases The gaseous fuel before combustion decreases Either the fuel or the air or both, increases Either the fuel or the air does not affect Combustion air decreases The gaseous fuel before combustion decreases Either the fuel or the air or both, increases Either the fuel or the air does not affect ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which will have the least volatile matter and hence will be the most difficult to ignite? Coke Aanthracite Semi-bituminous coal Bituminous coal Coke Aanthracite Semi-bituminous coal Bituminous coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion One kg of carbon for theoretically complete combustion requires __________ kg of air. 0.5 23 11.5 12 0.5 23 11.5 12 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke compared to the coal from which it has been made, contains Less volatile matter Greater percentage of ash More carbon All of these Less volatile matter Greater percentage of ash More carbon All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ignition temperature of a fuel in air is __________ that in pure oxygen. Equal to More than Either more or less; depends on the type of fuel Less than Equal to More than Either more or less; depends on the type of fuel Less than ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene recovered from coke oven gas is used As moth balls (insecticides) As moisture proof coating on fibres For making electrodes As a fuel in furnaces As moth balls (insecticides) As moisture proof coating on fibres For making electrodes As a fuel in furnaces ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS