Fuels and Combustion Spontaneous combustion of coal on storage results due to Inadequate ventilation Low temperature oxidation All of these Storage in large heaps with small surface to volume ratio Inadequate ventilation Low temperature oxidation All of these Storage in large heaps with small surface to volume ratio ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High ash containing coke Produces more slag when used in the blast furnace None of these Has poor strength and abrasion resistance Is desirable in producer gas manufacture Produces more slag when used in the blast furnace None of these Has poor strength and abrasion resistance Is desirable in producer gas manufacture ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal containing large quantity of __________ are difficult to wash. Free impurities Volatile matter Ash Inherent mineral matter Free impurities Volatile matter Ash Inherent mineral matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Quantity of coke produced from metallurgical coal may be around __________ percent. 95 30 50 75 95 30 50 75 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Function of secondary air in pulverised coal firing is to Dry the coal Reduce primary air requirement Ensure efficient burning of coal around the burner Transport the coal to the burner Dry the coal Reduce primary air requirement Ensure efficient burning of coal around the burner Transport the coal to the burner ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of excess of combustion air in the combustion of fuels results in Condensation of water vapour from the fuel gas Long flame None of these Heat losses Condensation of water vapour from the fuel gas Long flame None of these Heat losses ANSWER DOWNLOAD EXAMIANS APP
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