Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Type (solid, liquid or gaseous) Ignition temperature Calorific value Sulphur content Type (solid, liquid or gaseous) Ignition temperature Calorific value Sulphur content 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. Hydrogenation Carbonisation Gasification None of these Hydrogenation Carbonisation Gasification None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Largest constituent of coke oven gas is N₂ H₂ CH₄ CO₂ N₂ H₂ CH₄ CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that 21% excess air has been used for combustion Complete combustion of fuel has taken place 21% excess oxygen has been used for combustion No excess air has been used for combustion 21% excess air has been used for combustion Complete combustion of fuel has taken place 21% excess oxygen has been used for combustion No excess air has been used for combustion 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. 750 500 950 1100 750 500 950 1100 ANSWER DOWNLOAD EXAMIANS APP
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