Fuels and Combustion Coking coals are invariably Lignites Anthracites Bituminous coals Semi-anthracites Lignites Anthracites Bituminous coals Semi-anthracites ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature carbonisation of coal produces No by-products Soft coke Metallurgical coke Very low calorific value coke oven gas No by-products Soft coke Metallurgical coke Very low calorific value coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accounts for maximum energy loss in a boiler? Unburnt carbon in flue gases Ash content in the fuel Flue gases Incomplete combustion Unburnt carbon in flue gases Ash content in the fuel Flue gases Incomplete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace coke is made from coal by High temperature carbonisation Medium temperature carbonisation Heating the coal in an oven in presence of air Low temperature carbonisation High temperature carbonisation Medium temperature carbonisation Heating the coal in an oven in presence of air Low temperature carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having Higher methane content and thus higher calorific value Higher carbon monoxide content Lower carbon dioxide content None of these Higher methane content and thus higher calorific value Higher carbon monoxide content Lower carbon dioxide content None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High ash containing coke 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 Produces more slag when used in the blast furnace ANSWER DOWNLOAD EXAMIANS APP
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