Petroleum Refinery Engineering Choose the correct statement regarding thermal cracking. Moderate changes in operating temperature does not change the depth of cracking At low pressure, the yield of lighter hydrocarbons are more Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking At low pressure, the yield of lighter hydrocarbons are more Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Naphtha yield in straight run distillation of crude oil may be about __________ percent. 12 6 2 18 12 6 2 18 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Feedstock for polymerisation is Naphtha Low boiling aromatics Cracked gases rich in C₂ & C₄ olefins None of these Naphtha Low boiling aromatics Cracked gases rich in C₂ & C₄ olefins None of these ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following processes is used for the production of petroleum coke? Reforming Visbreaking Cracking Stabilisation Reforming Visbreaking Cracking Stabilisation ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Penetration test determines the __________ of the grease. Lubricating properties (e.g. oilness) Variation in viscosity with temperature Service temperature Stiffness Lubricating properties (e.g. oilness) Variation in viscosity with temperature Service temperature Stiffness ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the All of these Lower solvent dilution ratio Elimination of solvent drying facility Higher nitration temperature All of these Lower solvent dilution ratio Elimination of solvent drying facility Higher nitration temperature ANSWER DOWNLOAD EXAMIANS APP
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