Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Ignition temperature Type (solid, liquid or gaseous) Sulphur content Calorific value Ignition temperature Type (solid, liquid or gaseous) Sulphur content 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. Gasification Carbonisation Hydrogenation None of these Gasification Carbonisation Hydrogenation 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 21% excess oxygen has been used for combustion 21% excess air has been used for combustion No excess air has been used for combustion Complete combustion of fuel has taken place 21% excess oxygen has been used for combustion 21% excess air has been used for combustion No excess air has been used for combustion Complete combustion of fuel has taken place 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. 500 950 1100 750 500 950 1100 750 ANSWER DOWNLOAD EXAMIANS APP
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