Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Both A & B Neither A nor B Because, it alone produces unreactive coke To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The internal energy of the combustion products is __________ compared to that of reactants. Less More or less ; (depends on the state of fuel.) Equal More Less More or less ; (depends on the state of fuel.) Equal More ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke Causes brittleness in steel Decreases the hardness of coke None of these Decreases the abrasion resistance of coke Causes brittleness in steel Decreases the hardness of coke None of these Decreases the abrasion resistance of coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of nitrogen in combustion air does not reduce the Flame temperature Amount of heat liberated Any of the above Flue gas temperature Flame temperature Amount of heat liberated Any of the above Flue gas temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent. 12 18 6 24 12 18 6 24 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Abrasion index of blast furnace coke should be around __________ percent. 35 20 55 80 35 20 55 80 ANSWER DOWNLOAD EXAMIANS APP
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