Fuels and Combustion Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm³. 6500 10000 4000 2500 6500 10000 4000 2500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Type (solid, liquid or gaseous) Sulphur content Calorific value Ignition temperature Type (solid, liquid or gaseous) Sulphur content Calorific value Ignition temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The internal energy of the combustion products is __________ compared to that of reactants. Less Equal More or less ; (depends on the state of fuel.) More Less Equal More or less ; (depends on the state of fuel.) More ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C. 120 65 30 180 120 65 30 180 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of phosphorous in metallurgical coal Increases its caking power Is not undersirable Badly affects the quality of steel Reduces its calorific value Increases its caking power Is not undersirable Badly affects the quality of steel Reduces its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the __________ of coal. None of these Carbonisation Hydrogenation Gasification None of these Carbonisation Hydrogenation Gasification ANSWER DOWNLOAD EXAMIANS APP
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