Petroleum Refinery Engineering Choose the correct statement regarding thermal cracking. Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking Increased residence time results in the decreased severity of cracking At low pressure, the yield of lighter hydrocarbons are more Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking Increased residence time results in the decreased severity of cracking At low pressure, the yield of lighter hydrocarbons are more ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Solution used in Doctor's treatment for the removal of mercaptans is Sodium plumbite Cupric chloride Potassium isobutyrate Sodium hydroxide Sodium plumbite Cupric chloride Potassium isobutyrate Sodium hydroxide ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones. Sulphur increases None of these Sulphur decreases Nitrogen decreases Sulphur increases None of these Sulphur decreases Nitrogen decreases ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Stabilisation of gasoline (petrol) means Removal of dissolved gases from it Improving its lead susceptibility Increasing its vapour pressure Increasing its oxidation stability Removal of dissolved gases from it Improving its lead susceptibility Increasing its vapour pressure Increasing its oxidation stability ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Polymerisation Produces i-octane from cracked gases containing i-butane and butene Causes aromatics to combine with each other Causes olefins to combine with each other Is aimed at producing lubricating oil Produces i-octane from cracked gases containing i-butane and butene Causes aromatics to combine with each other Causes olefins to combine with each other Is aimed at producing lubricating oil ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering In case of liquid petrofuels, momentary combustion is observed at its Preheating temperature corresponding to viscosity of 25 centistokes Fire point Flash point Flame temperature Preheating temperature corresponding to viscosity of 25 centistokes Fire point Flash point Flame temperature ANSWER DOWNLOAD EXAMIANS APP
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