Petroleum Refinery Engineering Choose the correct statement regarding thermal cracking. Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking At low pressure, the yield of lighter hydrocarbons are more Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking At low pressure, the yield of lighter hydrocarbons are more ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering The characterisation factor of crude petroleum oil is around 28 3 11 22 28 3 11 22 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Glycol added to petrol acts as a/an __________ agent. Dewaxing Anti-gum forming Anti-icing Anti-knocking Dewaxing Anti-gum forming Anti-icing Anti-knocking ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Tetra-ethyl lead is added in gasoline to Reduce gum formation Reduce the pour point Increase its smoke point Increase its octane number Reduce gum formation Reduce the pour point Increase its smoke point Increase its octane number ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Hydrogen percentage (by weight) in crude petroleum may be about 15 25 5 35 15 25 5 35 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pressure & temperature maintained in catalytic cracking is about 2atm & 500°C 30atm & 200°C 10atm & 500°C 50atm. & 750°C 2atm & 500°C 30atm & 200°C 10atm & 500°C 50atm. & 750°C ANSWER DOWNLOAD EXAMIANS APP
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