Petroleum Refinery Engineering Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm² is maintained during cracking mainly to Enhance the octane number of gasoline Reduce gum content in gasoline Increase the yield of light distillates Suppress coke formation Enhance the octane number of gasoline Reduce gum content in gasoline Increase the yield of light distillates Suppress coke formation ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Waxes present in petroleum products Crystallise out at low temperature Are not soluble in them Can be separated out by distillation Decrease their viscosity Crystallise out at low temperature Are not soluble in them Can be separated out by distillation Decrease their viscosity ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C. 90 50 70 140 90 50 70 140 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Name the hydrocarbon having the poorest oxidation stability. Paraffin Aromatics Olefin Naphthene Paraffin Aromatics Olefin Naphthene ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering The main use of heavy gas oil produced by the vacuum distillation unit is as a None of these Blending component for petrol Blending component for kerosene Feedstock for fluid catalytic cracking unit None of these Blending component for petrol Blending component for kerosene Feedstock for fluid catalytic cracking unit ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Ethyl mercaptan is a/an __________ compound. None of these Oxygen Nitrogen Sulphur None of these Oxygen Nitrogen Sulphur ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS