Fuels and Combustion High ash containing coke Has poor strength and abrasion resistance Is desirable in producer gas manufacture None of these Produces more slag when used in the blast furnace Has poor strength and abrasion resistance Is desirable in producer gas manufacture None of these Produces more slag when used in the blast furnace ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require maximum amount of % excess air for complete combustion? Furnace oil Lump coal (fixed on chain grate) Coke oven gas Pulverised coal Furnace oil Lump coal (fixed on chain grate) Coke oven gas Pulverised coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms. 3 to 4 5 to 15 1 to 2 20 to 40 3 to 4 5 to 15 1 to 2 20 to 40 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest heat of combustion? CO C₂H₆ H₂ CH₄ CO C₂H₆ H₂ CH₄ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of phosphorous in metallurgical coal Increases its caking power Badly affects the quality of steel Reduces its calorific value Is not undersirable Increases its caking power Badly affects the quality of steel Reduces its calorific value Is not undersirable ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal, the Tar yield is more Ignition temperature of coke produced is less Gas yield is less Aromatic content of tar produced is more Tar yield is more Ignition temperature of coke produced is less Gas yield is less Aromatic content of tar produced is more ANSWER DOWNLOAD EXAMIANS APP
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