Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. In between 37 & 71% < 37% >71% None of these In between 37 & 71% < 37% >71% None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm. 50 1000 5000 10000 50 1000 5000 10000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in the temperature of carbonisation of coal Methane content in the coke oven gas decreases and carbon monoxide content increases 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 All of these Methane content in the coke oven gas decreases and carbon monoxide content increases 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 All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pulverised coal used in boiler firing need not have High bulk density Less moisture content Lower ash content High fusion point of its ash High bulk density Less moisture content Lower ash content High fusion point of its ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace gas is a very poisonous gas because of its predominantly high __________ content. CO CH₄ H₂O CO₂ CO CH₄ H₂O CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ present in coal is not determined in its ultimate analysis. Total carbon Hydrogen Fixed carbon Nitrogen Total carbon Hydrogen Fixed carbon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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