Fuels and Combustion Removal of hydrogen from coke oven gas Is not possible on commerical scale Decreases its calorific value Increases its calorific value Does not alter its calorific value Is not possible on commerical scale Decreases its calorific value Increases its calorific value Does not alter its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value of 'LPG' (50% propane + 50% butane) is about __________ kcal/Nm³. 15, 000 10, 000 25, 000 5000 15, 000 10, 000 25, 000 5000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the Low calorific value of the fuel Presence of large quantity of hydrogen in the fuel Lack of thorough mixing of fuel with air High sulphur content in the fuel Low calorific value of the fuel Presence of large quantity of hydrogen in the fuel Lack of thorough mixing of fuel with air High sulphur content in the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is called "blue gas"? Natural gas Water gas Coke oven gas Producer gas Natural gas Water gas Coke oven gas Producer gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The bright glow of a combustion process is the characteristic of __________ temperature oxidation of coal. Fast & slow Slow & high Fast & high Slow & low Fast & slow Slow & high Fast & high Slow & low ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke None of these Causes brittleness in steel Decreases the hardness of coke Decreases the abrasion resistance of coke None of these Causes brittleness in steel Decreases the hardness of coke Decreases the abrasion resistance of coke ANSWER DOWNLOAD EXAMIANS APP
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