Fuels and Combustion Mineral matter content (M) and ash content (A) in coal are approximately related as M = 2A M = 1.5A M = 1.1A M = A M = 2A M = 1.5A M = 1.1A M = A ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As time passes, the calorific value of stored coal Increases Remains unaltered May increase or decrease (depends on the method of storage) Decreases Increases Remains unaltered May increase or decrease (depends on the method of storage) Decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Overfire burning in a furnace is a phenomenon characterised by the Supply of excess fuel Supply of excess air Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air None of these Supply of excess fuel Supply of excess air Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air None of these 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 None of these Higher methane content and thus higher calorific value Lower carbon dioxide content Higher carbon monoxide content None of these Higher methane content and thus higher calorific value Lower carbon dioxide content Higher carbon monoxide content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in C/H ratio of a fuel, the dew point of flue gases Decreases Increases May increase or decrease ; depends on the type of fuel Remains same Decreases Increases May increase or decrease ; depends on the type of fuel Remains same ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace gas burns with a bluish flame, because of the presence of CO₂ S CH₄ CO CO₂ S CH₄ CO ANSWER DOWNLOAD EXAMIANS APP
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