Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Calorific value Type (solid, liquid or gaseous) Sulphur content Ignition temperature Calorific value Type (solid, liquid or gaseous) Sulphur content Ignition temperature 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. Carbonisation Hydrogenation Gasification None of these Carbonisation Hydrogenation Gasification None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Largest constituent of coke oven gas is CO₂ H₂ N₂ CH₄ CO₂ H₂ N₂ CH₄ 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 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 21% excess air has been used for combustion Complete combustion of fuel has taken place 21% excess oxygen 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. 500 750 950 1100 500 750 950 1100 ANSWER DOWNLOAD EXAMIANS APP
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