Fuels and Combustion During the carbonisation of coal All of these Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C Evolution of H₂ and formation of methane and aromatics occur at > 700°C All of these Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C Evolution of H₂ and formation of methane and aromatics occur at > 700°C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High ash containing coke None of these Produces more slag when used in the blast furnace Has poor strength and abrasion resistance Is desirable in producer gas manufacture None of these Produces more slag when used in the blast furnace Has poor strength and abrasion resistance Is desirable in producer gas manufacture ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen. All of these 1kg mole 32 kg 22.4 Nm³ All of these 1kg mole 32 kg 22.4 Nm³ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of coke oven gas is around __________ Kcal/Nm³. 2000 7500 4200 900 2000 7500 4200 900 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Nitrogen present in the flue gas is determined in the orsat apparatus by absorbing it in None of these Pyrogallol solution Ammoniacal cuprous chloride KOH None of these Pyrogallol solution Ammoniacal cuprous chloride KOH ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the Aromatic content of tar produced is more Gas yield is less Ignition temperature of coke produced is less Tar yield is more Aromatic content of tar produced is more Gas yield is less Ignition temperature of coke produced is less Tar yield is more ANSWER DOWNLOAD EXAMIANS APP
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