Fuels and Combustion Which of the following gaseous fuels has the highest net calorific value (kcal/Nm³)? Natural gas Carburetted water gas Liquified petroleum gas Producer gas Natural gas Carburetted water gas Liquified petroleum gas Producer gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value of producer gas is around __________ kcal/Nm³ 1300 9000 4500 500 1300 9000 4500 500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 700 to 850 350 to 450 100 to 150 550 to 650 700 to 850 350 to 450 100 to 150 550 to 650 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The internal energy of the combustion products is __________ compared to that of reactants. More Equal Less More or less ; (depends on the state of fuel.) More Equal Less More or less ; (depends on the state of fuel.) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion If oxygen content in the flue gas rises too high, fuel is being wasted by Dry gas/stack gas loss None of these Moisture loss Incomplete combustion Dry gas/stack gas loss None of these Moisture loss Incomplete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Froth floatation is used for Washing lump coal (> 80 mm size) Washing fine coal dust (< 0.5 mm size) All of these Removing ash from the coal based on difference in specific gravity of coal and ash Washing lump coal (> 80 mm size) Washing fine coal dust (< 0.5 mm size) All of these Removing ash from the coal based on difference in specific gravity of coal and ash ANSWER DOWNLOAD EXAMIANS APP
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