Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 550 to 650 350 to 450 700 to 850 100 to 150 550 to 650 350 to 450 700 to 850 100 to 150 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be None of these Low Very high, if the fuel is of low calorific value High None of these Low Very high, if the fuel is of low calorific value High ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke made in narrower by-product coke ovens (as compared to wider ovens) is Less reactive Stronger Smaller in size All of these Less reactive Stronger Smaller in size All of these 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 Actual flame temperature is always lower than the adiabatic flame temperature, because there is No possibility of obtaining complete combustion at high temperature Neither A nor B Both A & B Always loss of heat from the flame No possibility of obtaining complete combustion at high temperature Neither A nor B Both A & B Always loss of heat from the flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. >71% In between 37 & 71% < 37% None of these >71% In between 37 & 71% < 37% None of these ANSWER DOWNLOAD EXAMIANS APP
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