Fuels and Combustion Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the Risk of explosion Incomplete combustion of coal Requirement of large volume combustion chamber Chances of clinker formation Risk of explosion Incomplete combustion of coal Requirement of large volume combustion chamber Chances of clinker formation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of a gaseous fuel results in increased Flame temperature Flame length Ignition temperature Quantity of flue gas Flame temperature Flame length Ignition temperature Quantity of flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Caking index of the coal blend used for the manufacture of metallurgical coke should be around 21 40 48 5 21 40 48 5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction? C + H₂O ⟷ CO + H₂ CO + H₂O ⟷ CO₂ + H₂ C + 2H₂O ⟷ CO₂ + 2H₂ 2CO ⟷ C + CO₂ C + H₂O ⟷ CO + H₂ CO + H₂O ⟷ CO₂ + H₂ C + 2H₂O ⟷ CO₂ + 2H₂ 2CO ⟷ C + CO₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke made in narrower by-product coke ovens (as compared to wider ovens) is Stronger Less reactive Smaller in size All of these Stronger Less reactive Smaller in size All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene recovered from coke oven gas is used For making electrodes As moisture proof coating on fibres As moth balls (insecticides) As a fuel in furnaces For making electrodes As moisture proof coating on fibres As moth balls (insecticides) As a fuel in furnaces ANSWER DOWNLOAD EXAMIANS APP
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