Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Oxygen content progressively decreases Calorific value of the coal increases Ratio of fixed carbon to volatile matter increases High rank coals have higher amount of volatile matter Oxygen content progressively decreases Calorific value of the coal increases Ratio of fixed carbon to volatile matter increases High rank coals have higher amount of volatile matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which is the most matured coal? Semi-anthracite Bituminous Lignite Anthracite Semi-anthracite Bituminous Lignite Anthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The internal energy of the combustion products is __________ compared to that of reactants. More More or less ; (depends on the state of fuel.) Equal Less More More or less ; (depends on the state of fuel.) Equal Less ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace gas burns with a bluish flame, because of the presence of CO S CH₄ CO₂ CO S CH₄ CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Main constituent of natural gas is C₃H₈ C₂H₆ CH₄ (upto 90%) H₂ C₃H₈ C₂H₆ CH₄ (upto 90%) H₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ of the coal is the basis for Seylor's coal classification. Calorific value Proximate analysis Caking index Ultimate analysis Calorific value Proximate analysis Caking index Ultimate analysis ANSWER DOWNLOAD EXAMIANS APP
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