Petroleum Refining and Processing – MCQs 50 Score: 0 Attempted: 0/50 Subscribe 1. The primary objective of petroleum refining is: (A) To explore new oil fields (B) To convert crude oil into useful products (C) To increase reservoir pressure (D) To drill production wells 2. The first major refining process is: (A) Cracking (B) Distillation (C) Reforming (D) Blending 3. Atmospheric distillation of crude oil is carried out at: (A) High vacuum (B) Atmospheric pressure (C) Supercritical pressure (D) High temperature only 4. The residue from atmospheric distillation is processed in: (A) Catalytic cracker (B) Vacuum distillation unit (C) Hydrotreater (D) Reforming unit 5. Which of the following is the lightest petroleum fraction? (A) Diesel (B) Gasoline (C) Kerosene (D) Asphalt 6. Octane number is a measure of: (A) Flash point of fuel (B) Knock resistance of gasoline (C) Viscosity of diesel (D) Density of crude oil 7. Cetane number is related to: (A) Diesel ignition quality (B) Gasoline volatility (C) Asphalt strength (D) LPG flammability 8. Catalytic cracking is used to: (A) Convert heavy fractions into lighter products (B) Remove sulfur from crude oil (C) Improve crude quality (D) Blend lubricants 9. Hydrocracking combines: (A) Distillation and blending (B) Hydrogenation and cracking (C) Reforming and distillation (D) Blending and refining 10. Reforming of gasoline improves its: (A) Viscosity (B) Octane number (C) Density (D) Flash point 11. Sulfur removal in refineries is done by: (A) Hydrodesulfurization (B) Cracking (C) Blending (D) Reforming 12. LPG mainly consists of: (A) Butane and propane (B) Methane and ethane (C) Hexane and heptane (D) Pentane and hexane 13. Which petroleum fraction is used for jet fuel? (A) Asphalt (B) Kerosene (C) Diesel (D) Gasoline 14. Asphalt is obtained from: (A) Gasoline fraction (B) Diesel fraction (C) Residue fraction (D) Naphtha fraction 15. Isomerization improves: (A) Diesel stability (B) Gasoline octane number (C) Asphalt viscosity (D) Crude API gravity 16. Catalysts used in catalytic cracking are usually: (A) Silica-alumina (B) Copper oxide (C) Nickel (D) Iron 17. A barrel of crude oil is equal to: (A) 100 liters (B) 119 liters (C) 159 liters (D) 200 liters 18. The gasoline fraction typically boils between: (A) 30–200°C (B) 200–300°C (C) 300–400°C (D) 400–500°C 19. Knocking in engines is caused by: (A) Premature fuel ignition (B) Excessive lubrication (C) High viscosity fuel (D) Low sulfur content 20. Straight-run gasoline has: (A) High octane number (B) Low octane number (C) Zero sulfur (D) High viscosity 21. The process used to produce lubricating oils is: (A) Hydrocracking (B) Solvent extraction (C) Thermal cracking (D) Catalytic reforming 22. Petroleum coke is mainly produced from: (A) Hydrocracking (B) Coking process (C) Blending (D) Distillation 23. Which refinery process is used to increase gasoline yield? (A) Distillation (B) Cracking (C) Blending (D) Desulfurization 24. API gravity measures: (A) Crude oil viscosity (B) Density of crude relative to water (C) Crude oil temperature (D) Sulfur content 25. A higher API gravity means the crude is: (A) Heavier (B) Lighter (C) More viscous (D) More sulfurous 26. The blending of different fractions is mainly done to: (A) Improve crude density (B) Meet product specifications (C) Increase refinery size (D) Lower API gravity 27. Which fuel is obtained from cracking and reforming? (A) Asphalt (B) Gasoline (C) Paraffin wax (D) Bitumen 28. Hydrogen is used in refineries for: (A) Desulfurization (B) Hydrocracking (C) Reforming (D) All of the above 29. Which of the following is a refinery by-product? (A) Petroleum coke (B) Sulfur (C) LPG (D) All of the above 30. Which property of crude oil is most important for refining? (A) Color (B) Density (C) Boiling range (D) Odor 31. Cracking converts: (A) Gasoline to diesel (B) Heavy hydrocarbons to light hydrocarbons (C) Light hydrocarbons to heavy hydrocarbons (D) Crude to asphalt 32. Which type of cracking uses heat alone? (A) Thermal cracking (B) Catalytic cracking (C) Hydrocracking (D) Reforming 33. Which of the following increases gasoline octane rating? (A) Reforming (B) Desulfurization (C) Coking (D) Distillation 34. Paraffin wax is produced from: (A) Gasoline (B) Kerosene (C) Lubricating oil fraction (D) Diesel 35. Which fraction is used as feedstock for petrochemicals? (A) Diesel (B) Naphtha (C) Asphalt (D) Residue 36. Alkylation produces: (A) Asphalt (B) High-octane gasoline components (C) LPG (D) Diesel 37. Which process reduces gum formation in gasoline? (A) Stabilization (B) Reforming (C) Cracking (D) Isomerization 38. A refinery is called a “complex refinery” if it: (A) Has only distillation units (B) Has cracking, reforming, and hydroprocessing units (C) Processes only light crude (D) Produces only lubricants 39. The sulfur content in fuels mainly contributes to: (A) Engine knocking (B) Corrosion and pollution (C) High viscosity (D) High volatility 40. The heaviest product from crude distillation is: (A) Asphalt/bitumen (B) Diesel (C) Kerosene (D) Gasoline 41. What is the flash point of gasoline? (A) Below 0°C (B) Around –40°C (C) Around –20°C (D) Around 40°C 42. Which is NOT a middle distillate product? (A) Diesel (B) Kerosene (C) Jet fuel (D) LPG 43. Which refining process helps in producing aromatics? (A) Reforming (B) Desulfurization (C) Distillation (D) Alkylation 44. The residue from vacuum distillation is often used for: (A) Gasoline production (B) Asphalt production (C) LPG production (D) Jet fuel 45. Which of the following is considered a clean fuel? (A) Diesel (B) Gasoline (C) Natural gas (D) Residual oil 46. A refinery flow diagram is called: (A) Process schematic (B) Piping & Instrument Diagram (P&ID) (C) Block flow diagram (D) All of the above 47. Desulfurization of fuels reduces: (A) Engine power (B) Air pollution (C) Viscosity (D) Density 48. Bitumen from refineries is mostly used in: (A) Road construction (B) Jet fuel (C) Cooking gas (D) Petrochemical feedstock 49. Hydrogen required in refineries is usually produced from: (A) Steam reforming of natural gas (B) Crude distillation (C) LPG cracking (D) Asphalt heating 50. The ultimate purpose of petroleum refining is to: (A) Increase drilling efficiency (B) Produce marketable fuels and petrochemicals (C) Enhance crude exploration (D) Improve well productivity FOUNDATIONAL SUBJECTS (Year 1 – Year 2)Engineering Mechanics (Statics & Dynamics) – MCQsFluid Mechanics – MCQsThermodynamics – MCQsComputer Programming (e.g., MATLAB, Python) – MCQsIntroduction to Engineering – MCQsGeology for Engineers – MCQsTechnical Communication – MCQs CORE PETROLEUM ENGINEERING SUBJECTS (Year 2 – Year 4)Introduction to Petroleum Engineering – MCQsPetroleum Geology – MCQsDrilling Engineering – MCQsReservoir Engineering – MCQsProduction Engineering – MCQsPetroleum Fluid Properties – MCQsWell Logging and Formation Evaluation – MCQsPetroleum Economics – MCQsPetroleum Refining and Processing – MCQs Natural Gas Engineering – MCQsEnhanced Oil Recovery (EOR) – MCQsWell Testing – MCQsReservoir Simulation – MCQsDrilling Fluids and Cementing – MCQsOffshore Petroleum Engineering – MCQsHealth, Safety and Environment (HSE) – MCQsPetroleum Project Management – MCQsCorrosion Engineering – MCQsArtificial Lift Techniques – MCQsPetrophysics – MCQs LABORATORIES & PRACTICALS (Theory-based MCQs can be made from these)Drilling Fluids Lab – MCQsCore Analysis Lab – MCQsReservoir Simulation Lab – MCQsRock and Fluid Properties Lab – MCQsWell Logging Lab – MCQs ELECTIVES (Optional/Advanced)Energy Transition and Sustainability – MCQsUnconventional Resources (Shale, Tight Gas, etc.) – MCQsData Analytics in Petroleum Engineering – MCQsGeographic Information Systems (GIS) – MCQsPetroleum Law and Policy – MCQsPipeline Engineering – MCQsRenewable Energy Integration – MCQs