Petroleum Refinery Engineering Detergent is added as an additive in engine lubricating oil to Keep contaminants in suspension Reduce deposit formation Prevent rusting Increase oxidation stability Keep contaminants in suspension Reduce deposit formation Prevent rusting Increase oxidation stability ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol. Waxes Diolefins Asphalt Mercaptans Waxes Diolefins Asphalt Mercaptans ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Fuel oil is subjected to visbreaking to reduce its Pressure drop on pumping Viscosity All of these Pour point Pressure drop on pumping Viscosity All of these Pour point ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering True boiling point apparatus is used for the Determination of characterisation factor Evaluation of oil stocks None of these Determination of true vapour pressure Determination of characterisation factor Evaluation of oil stocks None of these Determination of true vapour pressure ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration Less than 90% promotes polymerisation More than 98% promotes cracking Both A & B Neither A nor B Less than 90% promotes polymerisation More than 98% promotes cracking Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pressure & temperature maintained in catalytic cracking is about 2atm & 500°C 10atm & 500°C 30atm & 200°C 50atm. & 750°C 2atm & 500°C 10atm & 500°C 30atm & 200°C 50atm. & 750°C ANSWER DOWNLOAD EXAMIANS APP
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