Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke Decreases the abrasion resistance of coke Causes brittleness in steel None of these Decreases the hardness of coke Decreases the abrasion resistance of coke Causes brittleness in steel None of these Decreases the hardness of coke ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest flame velocity? H₂ CO C₂H₆ CH₄ H₂ CO C₂H₆ CH₄ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis. 1100 500 950 750 1100 500 950 750 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen percentage (by weight) in atmospheric air is 21 23 29 19 21 23 29 19 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is pulverised before burning in large capacity boiler furnaces mainly to Facilitate easy ash removal Enhance its calorific value Provide trouble free operation Ensure its complete combustion Facilitate easy ash removal Enhance its calorific value Provide trouble free operation Ensure its complete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fusion point of coal ash increases with increase in its __________ content. Lime and magnesia Iron silicate Iron sulphate All of these Lime and magnesia Iron silicate Iron sulphate All of these ANSWER DOWNLOAD EXAMIANS APP
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