Fuels and Combustion Which of the following fuel gases has the highest calorific value ? Coal bed methane (CBM) Liquefied petroleum gas (LPG) Natural gas Sewage gas Coal bed methane (CBM) Liquefied petroleum gas (LPG) Natural gas Sewage gas 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 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 Higher methane content and thus higher calorific value Higher carbon monoxide content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace gas constitutes mainly of N₂ & CO CH₄ & CO₂ N₂ & H₂ N₂ & CH₄ N₂ & CO CH₄ & CO₂ N₂ & H₂ N₂ & CH₄ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of phosphorous in metallurgical coal Increases its caking power Is not undersirable Badly affects the quality of steel Reduces its calorific value Increases its caking power Is not undersirable Badly affects the quality of steel Reduces its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly caking coals Both B and C May damage the coke oven walls during carbonisation Produce strong coke Produce weak coke Both B and C May damage the coke oven walls during carbonisation Produce strong coke Produce weak coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Laboratory gas is obtained by the cracking of Diesel Fuel oil Gasoline Kerosene Diesel Fuel oil Gasoline Kerosene ANSWER DOWNLOAD EXAMIANS APP
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