Fuels and Combustion Coke compared to the coal from which it has been made, contains More carbon Greater percentage of ash All of these Less volatile matter More carbon Greater percentage of ash All of these Less volatile matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal Reduces its sulphur and ash content Controls its ash fusibility and increases its calorific value All of these Improves its coking properties Reduces its sulphur and ash content Controls its ash fusibility and increases its calorific value All of these Improves its coking properties ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fusion point of coal ash increases with increase in its __________ content. Lime and magnesia Iron silicate All of these Iron sulphate Lime and magnesia Iron silicate All of these Iron sulphate ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Naphthalene recovered from coke oven gas is used As a fuel in furnaces 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) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 700 to 850 550 to 650 100 to 150 350 to 450 700 to 850 550 to 650 100 to 150 350 to 450 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The calorific value of a gas of composition CO₂ = 20%, H₂ = 50%, CH₄ = 30%, is y. If the composition of gas is changed to H₂ = 50%, CH₄ = 30%, CO₂ = 10%, N₂ = 10%, then the calorifice value will be Y 1.05 y 0.95 y 1.8 y Y 1.05 y 0.95 y 1.8 y ANSWER DOWNLOAD EXAMIANS APP
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