Fuels and Combustion During the carbonisation of coal Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C All of these Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All tar is evolved at < 600°C All of these Evolution of H₂ and formation of methane and aromatics occur at > 700°C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking coals are invariably Semi-anthracites Bituminous coals Lignites Anthracites Semi-anthracites Bituminous coals Lignites Anthracites ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Out of the following fuels, the difference between gross and net calorific value will be minimum in case of Coke oven gas Blast furnace gas Water gas Natural gas Coke oven gas Blast furnace gas Water gas Natural gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of coal charge for the coke ovens reduces the Fuel consumption in coking Time of carbonisation Yield of gas and tar All of these Fuel consumption in coking Time of carbonisation Yield of gas and tar All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is pulverised before burning in large capacity boiler furnaces mainly to Provide trouble free operation Facilitate easy ash removal Enhance its calorific value Ensure its complete combustion Provide trouble free operation Facilitate easy ash removal Enhance its calorific value Ensure its complete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Atomising steam to fuel oil ratio in a burner should be around 0.5 3.5 1.5 2.5 0.5 3.5 1.5 2.5 ANSWER DOWNLOAD EXAMIANS APP
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