Fuels and Combustion A good metallurgical coke Should be brittle Should have high porosity Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have low fusion point of its ash Should be brittle Should have high porosity Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have low fusion point of its ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Out of the following fuels, the difference between gross and net calorific value will be minimum in case of Water gas Coke oven gas Natural gas Blast furnace gas Water gas Coke oven gas Natural gas Blast furnace gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene is used for making 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) All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High rate of heating of coke ovens Produces larger size coke None of these May damage its walls due to abrupt excessive swelling of coal Increases the time of carbonisation Produces larger size coke None of these May damage its walls due to abrupt excessive swelling of coal Increases the time of carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of a gaseous fuel results in increased Flame length Flame temperature Ignition temperature Quantity of flue gas Flame length Flame temperature Ignition temperature Quantity of flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Flue gas from the heating chamber of byproduct coke ovens is removed by Forced draft fan Steam ejector Natural draft Induced draft fan Forced draft fan Steam ejector Natural draft Induced draft fan ANSWER DOWNLOAD EXAMIANS APP
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