Fuels and Combustion Coals used for the generation of producer gas should have High caking index Very low ash content (8-10%) High volatile matter content Low fusion point of ash High caking index Very low ash content (8-10%) High volatile matter content Low fusion point of ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a by-product recovered in a high temperature coal carbonisation plant? Benzol Ethylene Pitch-cresosote mixture (PCM) Napthalene Benzol Ethylene Pitch-cresosote mixture (PCM) Napthalene ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke having higher porosity has Lower bulk density Higher reactivity Lower strength All of these Lower bulk density Higher reactivity Lower strength All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal tar (produced by high temperature carbonisation) is the main source of Aromatic compounds Paraffins Olefins Alphatic compounds Aromatic compounds Paraffins Olefins Alphatic compounds ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Rate of low temperature oxidation of coal due to bad storage conditions Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal Decreases with increase in surface area Is accelerated by storage in large heaps with small surface to volume ratio Does not vary with increase in surface area Is more for low volatile coal compared to high volatile coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Undercharging of coal in the by-product coke ovens results in Increase in its throughput Decrease in the c.v. of coke oven gas Increase in the c.v. of coke oven gas No change in the c.v. of coke oven gas Increase in its throughput Decrease in the c.v. of coke oven gas Increase in the c.v. of coke oven gas No change in the c.v. of coke oven gas ANSWER DOWNLOAD EXAMIANS APP
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