Fuels and Combustion The difference between total carbon and fixed carbon of coal will be minimum in case of Lignite High temperature coke (V.M < 0.5%) Anthracite Bituminous coal Lignite High temperature coke (V.M < 0.5%) Anthracite Bituminous coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should be brittle Should have low fusion point of its ash Should have high porosity Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should be brittle Should have low fusion point of its ash Should have high porosity ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is the most reactive (as regards the formation of CO + H₂ from C + H₂O) ? Blast furnace coke Sub-bituminous coal Low temperature coke Anthracite coal Blast furnace coke Sub-bituminous coal Low temperature coke Anthracite coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent. 35 to 45 15 to 25 75 55 to 75 35 to 45 15 to 25 75 55 to 75 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Natural draft created by the chimney depends upon Both A & B Neither A nor B Temperature of the flue gas Its height Both A & B Neither A nor B Temperature of the flue gas Its height ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in moisture content of coal, its Clinkering tendency during combustion increases Calorific value increases sometimes None of these Bulk density always decreases Clinkering tendency during combustion increases Calorific value increases sometimes None of these Bulk density always decreases ANSWER DOWNLOAD EXAMIANS APP
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