Natural Gas Engineering – MCQs 50 Score: 0 Attempted: 0/50 Subscribe 1. What is the primary component of natural gas? (A) Ethane (B) Propane (C) Methane (D) Butane 2. Which process is used to remove water vapor from natural gas? (A) Absorption (B) Adsorption (C) Glycol dehydration (D) Cryogenic separation 3. Natural gas is measured in which common volumetric unit? (A) Cubic feet (B) Gallons (C) Liters (D) Barrels 4. Which hydrocarbon is classified as a natural gas liquid (NGL)? (A) Helium (B) Propane (C) Carbon dioxide (D) Hydrogen 5. The calorific value of natural gas is mainly determined by the content of: (A) Methane (B) Nitrogen (C) Carbon dioxide (D) Hydrogen sulfide 6. What is the main impurity removed during gas sweetening? (A) Oxygen (B) Hydrogen sulfide (C) Methane (D) Ethane 7. LNG stands for: (A) Light Natural Gas (B) Liquid Nitrogen Gas (C) Liquefied Natural Gas (D) Low Nitrogen Gas 8. At what approximate temperature is natural gas liquefied to form LNG? (A) –50 °C (B) –100 °C (C) –162 °C (D) –200 °C 9. Which equipment is commonly used for separating gas, oil, and water at the wellhead? (A) Heater treater (B) Separator (C) Compressor (D) Absorber 10. Which law is used to calculate compressibility of natural gas? (A) Boyle’s law (B) Dalton’s law (C) Real gas equation of state (D) Henry’s law 11. The gas compressibility factor (Z) is equal to 1 for: (A) Real gases (B) Ideal gases (C) Compressed gases (D) Dissolved gases 12. What is the typical unit of gas flow measurement in pipelines? (A) Gallons per day (B) Cubic meters per hour (C) Standard cubic feet per day (SCFD) (D) Barrels per hour 13. Which hydrocarbon is NOT considered part of natural gas liquids (NGLs)? (A) Butane (B) Ethane (C) Methane (D) Pentane 14. The Wobbe Index is used to measure: (A) Gas purity (B) Gas interchangeability (C) Gas density (D) Gas viscosity 15. A Joule-Thomson valve is used in natural gas plants for: (A) Heating (B) Cooling by expansion (C) Compression (D) Absorption 16. Which country has the largest proven natural gas reserves? (A) USA (B) Russia (C) Qatar (D) Iran 17. In gas transmission pipelines, what is used to increase pressure? (A) Compressors (B) Pumps (C) Valves (D) Coolers 18. CNG stands for: (A) Compressed Nitrogen Gas (B) Compressed Natural Gas (C) Condensed Natural Gas (D) Converted Natural Gas 19. Gas hydrates are crystalline solids formed by: (A) Methane and CO₂ (B) Gas and hydrocarbons (C) Gas and water (D) Gas and sulfur compounds 20. What is the common method to prevent gas hydrate formation in pipelines? (A) Heating pipelines (B) Injecting methanol or glycol (C) Using filters (D) Using catalysts 21. Which equation is widely used to calculate natural gas flow in pipelines? (A) Darcy-Weisbach equation (B) Panhandle equation (C) Manning’s equation (D) Reynolds equation 22. What is the main by-product of burning natural gas? (A) Sulfur dioxide (B) Carbon monoxide (C) Carbon dioxide (D) Hydrogen 23. What is the heating value of natural gas usually expressed in? (A) Joules (B) Calories (C) BTU per standard cubic foot (D) Watts 24. What does LPG stand for? (A) Liquid Petroleum Gas (B) Light Petroleum Gas (C) Low Pressure Gas (D) Liquefied Primary Gas 25. LNG storage tanks are typically designed as: (A) Underground tanks (B) Single wall tanks (C) Double wall insulated tanks (D) Pressurized cylinders 26. What is the typical pressure range of natural gas transmission pipelines? (A) 10–50 psi (B) 100–200 psi (C) 200–1000 psi (D) 1000–1500 psi 27. What type of compressor is commonly used in natural gas pipelines? (A) Centrifugal (B) Reciprocating (C) Axial flow (D) Diaphragm 28. Which of the following gases is inert and often found with natural gas? (A) Helium (B) Oxygen (C) Carbon monoxide (D) Ammonia 29. What is the main safety concern with natural gas pipelines? (A) Corrosion (B) Leakage and explosion (C) Low efficiency (D) Heat loss 30. The sour gas contains high amounts of: (A) Methane (B) Oxygen (C) Hydrogen sulfide (D) Nitrogen 31. What is the density of methane at standard conditions approximately? (A) 0.2 kg/m³ (B) 0.5 kg/m³ (C) 0.7 kg/m³ (D) 1.0 kg/m³ 32. Gas sweetening is usually carried out using which solution? (A) Sodium hydroxide (B) Monoethanolamine (MEA) (C) Methanol (D) Propane 33. The main objective of gas processing is to: (A) Increase viscosity (B) Remove impurities and extract NGLs (C) Reduce methane content (D) Add hydrogen 34. Which country is the largest exporter of LNG? (A) USA (B) Australia (C) Qatar (D) Russia 35. What is the ignition temperature of methane approximately? (A) 350 °C (B) 500 °C (C) 650 °C (D) 750 °C 36. What does SCFM stand for in gas measurement? (A) Standard Cubic Feet per Minute (B) Standard Cubic Fuel per Meter (C) Standard Cooling Factor of Methane (D) Standard Cubic Flow Measurement 37. The term “BTU” refers to: (A) British Thermal Unit (B) Basic Thermal Unit (C) Boiler Temperature Unit (D) Base Transport Unit 38. What is the main advantage of LNG transport compared to pipelines? (A) Lower energy density (B) Flexibility in global shipping (C) Higher impurity levels (D) Cheaper storage 39. What is the molecular formula of methane? (A) CH (B) CH₂ (C) CH₃ (D) CH₄ 40. Which process separates NGLs from natural gas? (A) Fractional distillation (B) Gas absorption (C) Catalytic cracking (D) Adsorption 41. The specific gravity of natural gas is usually less than: (A) 0.3 (B) 0.6 (C) 1.0 (D) 1.2 42. Which instrument measures natural gas flow? (A) Venturi meter (B) Orifice meter (C) Rotameter (D) All of the above 43. A gas reservoir with high CO₂ and H₂S is termed: (A) Wet gas reservoir (B) Sour gas reservoir (C) Dry gas reservoir (D) Associated gas reservoir 44. Which process is used to liquefy natural gas? (A) Adsorption (B) Compression and cooling (C) Fractional distillation (D) Dehydration 45. The common unit for LNG storage capacity is: (A) Gallons (B) Barrels (C) Cubic meters (D) Tons 46. What is the main cause of pipeline corrosion in natural gas systems? (A) Carbon monoxide (B) Hydrogen sulfide and water (C) Nitrogen (D) Helium 47. Which of the following is considered unconventional natural gas? (A) Coalbed methane (B) Sour gas (C) Associated gas (D) Dry gas 48. Which region is known as the “Qatar of the North” due to vast gas reserves? (A) Russia – Yamal Peninsula (B) Canada – Alberta Basin (C) USA – Permian Basin (D) Iran – South Pars field 49. Natural gas pipelines are usually made of: (A) Copper (B) PVC (C) Steel (D) Aluminum 50. The term “wet gas” refers to natural gas containing: (A) Hydrogen (B) High levels of CO₂ (C) Natural gas liquids (NGLs) (D) Oxygen 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