Petroleum Refinery Engineering Crude oil is subjected to vacuum distillation in the last stage, because High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose High purity products can be obtained thereby Lighter/low boiling products are prone to thermal decomposition None of these High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose High purity products can be obtained thereby Lighter/low boiling products are prone to thermal decomposition None of these ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Older crude petroleum Gives more distillates Gives less tar Is light and better All of these Gives more distillates Gives less tar Is light and better All of these ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering A typical yield of diesel in straight run distillation of crude oil may be about __________ percent. 35 8 18 28 35 8 18 28 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering With increase in the molecular weight of aromatic present in kerosene, its smoking tendency Increases Is unpredictable Decreases Remains same Increases Is unpredictable Decreases Remains same ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Catalyst used in isomerisation process is AlCl3 H₃PO₄ H₂SO₄ HF AlCl3 H₃PO₄ H₂SO₄ HF 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 Suppress coke formation Enhance the octane number of gasoline Increase the yield of light distillates Reduce gum content in gasoline Suppress coke formation Enhance the octane number of gasoline Increase the yield of light distillates Reduce gum content in gasoline ANSWER DOWNLOAD EXAMIANS APP