Fuels and Combustion Which of the following is not a by-product recovered in a high temperature coal carbonisation plant? Napthalene Pitch-cresosote mixture (PCM) Ethylene Benzol Napthalene Pitch-cresosote mixture (PCM) Ethylene Benzol ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less. Yield percentage of coke Free carbon content in tar Yield of ammonia present in coke oven gas Difference in gross & net calorific value of the coke oven gas Yield percentage of coke Free carbon content in tar Yield of ammonia present in coke oven gas Difference in gross & net calorific value of the coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In general, the limit of inflammability/explosion limit of fuel gases is widened by the Use of pure oxygen for combustion instead of air Increase in gas pressure All of these Increase in temperature (i.e. preheating) Use of pure oxygen for combustion instead of air Increase in gas pressure All of these Increase in temperature (i.e. preheating) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about 25000 kcal/kg Same as that of coal middling 8800 kcal/m³ 8800 kcal/kg 25000 kcal/kg Same as that of coal middling 8800 kcal/m³ 8800 kcal/kg ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The hottest part of the flame lies in its____zone. Unburnt gases Non-luminous Luminous Yellow Unburnt gases Non-luminous Luminous Yellow ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion One kg of carbon for theoretically complete combustion requires __________ kg of air. 12 0.5 11.5 23 12 0.5 11.5 23 ANSWER DOWNLOAD EXAMIANS APP
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