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 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 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Solvent used in duo-sol extraction for lube oil upgradation is a mixture of Propane & liquid sulphur dioxide Methyl ethyl ketone & glycol Propane & phenol-cresol mixture Phenol & furfural Propane & liquid sulphur dioxide Methyl ethyl ketone & glycol Propane & phenol-cresol mixture Phenol & furfural ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering In catalytic alkylation, higher iso-butane to olefin ratio gives Both A & B Low final boiling point product Neither A nor B Higher yield Both A & B Low final boiling point product Neither A nor B Higher yield ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Catalyst used in isomerisation process is HF H₃PO₄ AlCl3 H₂SO₄ HF H₃PO₄ AlCl3 H₂SO₄ ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which is the most ideal feed stock for 'coking' process used for the manufacture of petroleum coke? Diesel Vacuum residue Naphtha Light gas oil Diesel Vacuum residue Naphtha Light gas oil ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Octane number of n-heptane is assumed to be 70 100 0 ∞ 70 100 0 ∞ ANSWER DOWNLOAD EXAMIANS APP
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