Fuels and Combustion During the carbonisation of coal Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All of these All tar is evolved at < 600°C Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All of these All tar is evolved at < 600°C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Lurgi gasifier (high pressure gasifier) as compared to Kopper Totzek gasifier (atmospheric pressure gasifier) produces Higher amount of methane Lower amount of hydrogen Higher amount of both methane and hydrogen Both A & B Higher amount of methane Lower amount of hydrogen Higher amount of both methane and hydrogen Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Undercharging of coal in the by-product coke ovens results in No change in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput Decrease in the c.v. of coke oven gas No change in the c.v. of coke oven gas Increase in the c.v. of coke oven gas Increase in its throughput Decrease in the c.v. of coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ present in coal is not determined in its ultimate analysis. Total carbon Nitrogen Fixed carbon Hydrogen Total carbon Nitrogen Fixed carbon Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen. All of these 22.4 Nm³ 1kg mole 32 kg All of these 22.4 Nm³ 1kg mole 32 kg ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion 'Mixed gas' used in steel plants is a mixture of F. gas and coke oven gas Coke oven gas and converter gas Coke oven gas and L.P.G Blast furnace gas and naphtha vapor F. gas and coke oven gas Coke oven gas and converter gas Coke oven gas and L.P.G Blast furnace gas and naphtha vapor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS