Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Is accelerated by storage in large heaps with small surface to volume ratio Is more for low volatile coal compared to high volatile coal Does not vary with increase in surface area Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Is more for low volatile coal compared to high volatile coal Does not vary with increase in surface area Decreases with increase in surface area ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The lowest temperature, at which a solid fuel produces enough vapors to support continuous combustion, is called Burning temperature Fire point Kindling temperature Smoke point Burning temperature Fire point Kindling temperature Smoke point ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The hottest part of the flame lies in its____zone. Unburnt gases Non-luminous Luminous Yellow Unburnt gases Non-luminous Luminous Yellow ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Weathering of coal during storage causes Increase in its friability Decrease in its caking capacity All of these Reduction in coal size Increase in its friability Decrease in its caking capacity All of these Reduction in coal size ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal tar (produced by high temperature carbonisation) is the main source of Alphatic compounds Aromatic compounds Paraffins Olefins Alphatic compounds Aromatic compounds Paraffins Olefins ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal having higher volatile matter content will necessarily have lower Caking index Calorific value Ash fusion temperature Ignition temperature Caking index Calorific value Ash fusion temperature Ignition temperature ANSWER DOWNLOAD EXAMIANS APP
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