Fuels and Combustion During coking of coal, the ash content (percentage) None of these Remains constant Decreases Increases None of these Remains constant Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? All of these Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature All of these Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During the carbonisation of coal All tar is evolved at < 600°C Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All of these All tar is evolved at < 600°C Evolution of H₂ and formation of methane and aromatics occur at > 700°C Hard semi-coke starts shrinking at 600°C All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest calorific value? Anthracite Sub-bituminous coal Peat Lignite Anthracite Sub-bituminous coal Peat Lignite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Eschka mixture, which is used for the determination of sulphur in coal, is a mixture of BaSO₄ & NaCl MgO & Na₂CO₃ MgSO₄ & BaCl₂ MgCO₃ & NaCl BaSO₄ & NaCl MgO & Na₂CO₃ MgSO₄ & BaCl₂ MgCO₃ & NaCl ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion 'Mixed gas' used in steel plants is a mixture of Blast furnace gas and naphtha vapor F. gas and coke oven gas Coke oven gas and L.P.G Coke oven gas and converter gas Blast furnace gas and naphtha vapor F. gas and coke oven gas Coke oven gas and L.P.G Coke oven gas and converter gas ANSWER DOWNLOAD EXAMIANS APP
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