Petroleum Refinery Engineering Paraffins are desirable in lubricating oil, as it has got high Smoke point Viscosity Viscosity index Pour point Smoke point Viscosity Viscosity index Pour point ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Detergent is added as an additive in engine lubricating oil to Keep contaminants in suspension Increase oxidation stability Prevent rusting Reduce deposit formation Keep contaminants in suspension Increase oxidation stability Prevent rusting Reduce deposit formation ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to None of these Increase its smoke point Decrease the breathing loss Improve its oxidation stability None of these Increase its smoke point Decrease the breathing loss Improve its oxidation stability ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pick out the undesirable property for a solvent meant for dewaxing of lube oil. Complete miscibility with oil High solubility of wax in the solvent Neither A nor B Both A & B Complete miscibility with oil High solubility of wax in the solvent Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C. 50 70 90 140 50 70 90 140 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following constituents present in petroleum is responsible for ash formation? Sulphur compounds Organometallic compounds Oxygen compounds Nitrogen compounds Sulphur compounds Organometallic compounds Oxygen compounds Nitrogen compounds ANSWER DOWNLOAD EXAMIANS APP
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