Petroleum Refinery Engineering Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of Coking Thermal cracking Discoloration Gum formation Coking Thermal cracking Discoloration Gum formation ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration 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 Both A & B More than 98% promotes cracking ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Penetration test determines the __________ of the grease. Stiffness Variation in viscosity with temperature Service temperature Lubricating properties (e.g. oilness) Stiffness Variation in viscosity with temperature Service temperature Lubricating properties (e.g. oilness) ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following has the highest octane number? I-paraffins Aromatics Naphthenes Olefins I-paraffins Aromatics Naphthenes Olefins ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Quinoline is a/an __________ compound. Nitrogen Sulphur None of these Oxygen Nitrogen Sulphur None of these Oxygen ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Operating temperature and pressure in catalytic reforming is about 15-45 Kgf/cm² & 450-550°C 50 - 75 kgf/cm² & 600 - 800°C 1-5 Kgf/cm² & 200°C 5-10 kgf/cm² & 150 - 250°C 15-45 Kgf/cm² & 450-550°C 50 - 75 kgf/cm² & 600 - 800°C 1-5 Kgf/cm² & 200°C 5-10 kgf/cm² & 150 - 250°C ANSWER DOWNLOAD EXAMIANS APP
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