Fuels and Combustion With increase in the temperature of carbonisation of coal All of these Hydrogen content of coke oven gas increases due to cracking of hydrocarbons Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content Methane content in the coke oven gas decreases and carbon monoxide content increases All of these Hydrogen content of coke oven gas increases due to cracking of hydrocarbons Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content Methane content in the coke oven gas decreases and carbon monoxide content increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value of 'LPG' (50% propane + 50% butane) is about __________ kcal/Nm³. 15, 000 5000 10, 000 25, 000 15, 000 5000 10, 000 25, 000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The fuel ratio of a coal is Helpful in estimation of its rank The ratio of its percentage of fixed carbon to that of volatile matter Neither A nor B Both A and B Helpful in estimation of its rank The ratio of its percentage of fixed carbon to that of volatile matter Neither A nor B Both A and B 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 Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent. 18 24 12 6 18 24 12 6 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in C/H ratio of a fuel, the dew point of flue gases Remains same May increase or decrease ; depends on the type of fuel Decreases Increases Remains same May increase or decrease ; depends on the type of fuel Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
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