Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Neither A nor B Because, it alone produces unreactive coke Both A & B To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Neither A nor B Because, it alone produces unreactive coke Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Combustion reaction of fuels is a/an __________ reaction. None of these Auto catalytic Exothermic Endothermic None of these Auto catalytic Exothermic Endothermic ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fussain Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation All of these Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal Is friable, charcoal like substance Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation All of these Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal Is friable, charcoal like substance ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The cooling medium used in dry quenching of coke is Air Phenolic water Carbon dioxide Nitrogen Air Phenolic water Carbon dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will Increase Not change Increase or decrease depending on the fuel type Decrease Increase Not change Increase or decrease depending on the fuel type Decrease ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum adiabatic flame temperature in air as compared to that in pure oxygen is Much higher Same Either lower or higher, depends on the type of fuel Much lower Much higher Same Either lower or higher, depends on the type of fuel Much lower ANSWER DOWNLOAD EXAMIANS APP
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