Fuels and Combustion Calorific value of Light paraffinic fuel oils is equal to that of equivalent olefins N-paraffin is lower than that of iso-paraffins of the same compounds Light paraffinic fuel oils is lower than that of equivalent olefins Light paraffinic fuel oils is higher than that of equivalent olefins Light paraffinic fuel oils is equal to that of equivalent olefins N-paraffin is lower than that of iso-paraffins of the same compounds Light paraffinic fuel oils is lower than that of equivalent olefins Light paraffinic fuel oils is higher than that of equivalent olefins ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. < 37% In between 37 & 71% None of these >71% < 37% In between 37 & 71% None of these >71% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The heat of combustion of a fuel Is equal to the heat of formation Can't be known without calculating it Is always positive Is always negative Is equal to the heat of formation Can't be known without calculating it Is always positive Is always negative ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ has the widest inflammability limit (explosion limit) of all the gases. Acetylene Carbon monoxide Hydrogen Methane Acetylene Carbon monoxide Hydrogen Methane ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A sample of natural gas containing 80% methane (CH₄) and rest nitrogen (N₂) is burnt with 20% excess air. With 80% of the combustibles producing CO₂ and the reminder going to CO, the Orsat analysis in volume percent is CO₂ : 6.26, CO : 1.56, O₂ : 3.91, H₂O :15.66, N₂ : 72.60 CO₂ : 6.39, CO : 1.60, O₂ : 3.99, H₂O:25.96, N₂:72.06 CO₂ : 7.42, CO : 1.86, O₂ : 4.64, N₂:86.02 CO₂ : 7.60, CO : 1.90, O₂ : 4.75, N₂ : 85.74 CO₂ : 6.26, CO : 1.56, O₂ : 3.91, H₂O :15.66, N₂ : 72.60 CO₂ : 6.39, CO : 1.60, O₂ : 3.99, H₂O:25.96, N₂:72.06 CO₂ : 7.42, CO : 1.86, O₂ : 4.64, N₂:86.02 CO₂ : 7.60, CO : 1.90, O₂ : 4.75, N₂ : 85.74 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about 8800 kcal/m³ Same as that of coal middling 25000 kcal/kg 8800 kcal/kg 8800 kcal/m³ Same as that of coal middling 25000 kcal/kg 8800 kcal/kg ANSWER DOWNLOAD EXAMIANS APP
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