Fuels and Combustion A good coking coal should have high __________ content. Sulphur & phosphorus None of these Moisture Ash Sulphur & phosphorus None of these Moisture Ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In low temperature carbonisation (as compared to high temperature carbonisation) of coal Ammonia yield is more Aliphatic tar is produced Free carbon in tar is more All of these Ammonia yield is more Aliphatic tar is produced Free carbon in tar is more All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Shallow and small piles Fine sizes without the presence of any lump Large heaps with small surface to volume ratio Closed space without any ventilation facility Shallow and small piles Fine sizes without the presence of any lump Large heaps with small surface to volume ratio Closed space without any ventilation facility 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 The heat of combustion of a fuel Can't be known without calculating it Is always negative Is always positive Is equal to the heat of formation Can't be known without calculating it Is always negative Is always positive Is equal to the heat of formation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent. 18 12 6 24 18 12 6 24 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS