Fuels and Combustion The function of secondary combustion air is to Completely burn the volatile matter Pneumatically convey the pulverised coal None of these Burn the lumpy coal Completely burn the volatile matter Pneumatically convey the pulverised coal None of these Burn the lumpy coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of phosphorous in metallurgical coal Increases its caking power Badly affects the quality of steel Is not undersirable Reduces its calorific value Increases its caking power Badly affects the quality of steel Is not undersirable Reduces its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis. 750 950 550 1150 750 950 550 1150 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For maximum discharge through a chimney, its height should be More than 105.7 metres Equal to the height of the hot gas column producing draught Infinitely long 200 meters More than 105.7 metres Equal to the height of the hot gas column producing draught Infinitely long 200 meters ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in the temperature of carbonisation of coal Methane content in the coke oven gas decreases and carbon monoxide content increases Hydrogen content of coke oven gas increases due to cracking of hydrocarbons Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content All of these Methane content in the coke oven gas decreases and carbon monoxide content increases Hydrogen content of coke oven gas increases due to cracking of hydrocarbons Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The shift conversion reaction taking place during water gas manufacture is given by None of these CO + H₂O ⟷ CO₂ + H₂ C + 2H₂O ⟷ CO₂ + 2H₂ C + H₂O ⟷ CO + H₂ None of these CO + H₂O ⟷ CO₂ + H₂ C + 2H₂O ⟷ CO₂ + 2H₂ C + H₂O ⟷ CO + H₂ ANSWER DOWNLOAD EXAMIANS APP
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