Petroleum Refinery Engineering Petroleum liquid fuels having flash point greater than 66°C is considered as safe during storage and handling. Which of the following has flash point > 66°C ? Kerosene Naphtha Petrol Heavy fuel oil Kerosene Naphtha Petrol Heavy fuel oil ANSWER DOWNLOAD EXAMIANS APP
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 Reduce gum content in gasoline Enhance the octane number of gasoline Increase the yield of light distillates Suppress coke formation Reduce gum content in gasoline Enhance the octane number of gasoline Increase the yield of light distillates Suppress coke formation ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Cetane number of diesel used in trucks may be about 14 85 35 50 14 85 35 50 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Feedstock for polymerisation is Low boiling aromatics Naphtha None of these Cracked gases rich in C₂ & C₄ olefins Low boiling aromatics Naphtha None of these Cracked gases rich in C₂ & C₄ olefins ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Flash point of an oil gives an idea of the Explosion hazards Nature of boiling point diagram of the system All of these Amount of low boiling fraction present Explosion hazards Nature of boiling point diagram of the system All of these Amount of low boiling fraction present ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration Both A & B More than 98% promotes cracking Less than 90% promotes polymerisation Neither A nor B Both A & B More than 98% promotes cracking Less than 90% promotes polymerisation Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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