Fuels and Combustion With increase in the oxygen content of the coal, its __________ decreases. Neither A nor B Calorific value Caking power Both A & B Neither A nor B Calorific value Caking power Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Beehive coke oven Facilitates by-products recovery Gives larger yield of coke (around 85%) as compared to by-product ovens Takes 2-3 days for coking of coal but requires no external fuel for heating Produces coke with very poor strength Facilitates by-products recovery Gives larger yield of coke (around 85%) as compared to by-product ovens Takes 2-3 days for coking of coal but requires no external fuel for heating Produces coke with very poor strength ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The internal energy of the combustion products is __________ compared to that of reactants. Equal More or less ; (depends on the state of fuel.) Less More Equal More or less ; (depends on the state of fuel.) Less More ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the Use of thick fire bed All of these Low fusion point of ash (< 1100° C) Use of preheated primary air Use of thick fire bed All of these Low fusion point of ash (< 1100° C) Use of preheated primary air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a primary fuel? Natural gas Blast furnace coke Gasoline Wood charcoal Natural gas Blast furnace coke Gasoline Wood charcoal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion One kg of carbon for theoretically complete combustion requires __________ kg of air. 23 11.5 12 0.5 23 11.5 12 0.5 ANSWER DOWNLOAD EXAMIANS APP
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