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  • Question
  • Main constituent of natural gas is


  • Options
  • A. CH4
  • B. C2H2
  • C. C2H4
  • D. C2H6

  • Correct Answer
  • CH4 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. Which of the following has the maximum °API gravity of all?

    • Options
    • A. Diesel
    • B. Kerosene
    • C. Petrol
    • D. Furnace oil
    • Discuss
    • 2. Crude oil produced by Indian oil fields are predominantly __________ in nature.

    • Options
    • A. paraffinic
    • B. naphthenic
    • C. asphaltic
    • D. mixed base
    • Discuss
    • 3. Pick out the wrong statement.

    • Options
    • A. Multigrade lubricating oils have high viscosity index.
    • B. Paraffinic oil has very high viscosity index.
    • C. Naphthenic oil has very low viscosity index.
    • D. High viscosity index means a large change in viscosity with change in temperature.
    • Discuss
    • 4. Which of the following processes consumes hydrogen?

    • Options
    • A. Fluid catalytic cracking
    • B. Visbreaking
    • C. Propane deasphalting
    • D. None of these
    • Discuss
    • 5. Crude petroleum oil is a __________ fuel.

    • Options
    • A. primary
    • B. fossil
    • C. both (a) & (b)
    • D. secondary
    • Discuss
    • 6. Sulphuric acid treatment of petroleum products removes the __________ materials.

    • Options
    • A. gum forming
    • B. color forming
    • C. asphaltic
    • D. all (a), (b) & (c)
    • Discuss
    • 7. Which of the following has the highest viscosity of all (at a given temperature)?

    • Options
    • A. Naphtha
    • B. Fuel oil
    • C. Light diesel oil
    • D. Petrol
    • Discuss
    • 8. Petroleum deposits are detected by the.

    • Options
    • A. oil seepage at the surface of the earth.
    • B. measuremet of density, elasticity and magnetic & electric properties of the rock in the crust of the earth.
    • C. age & nature of rocks inside the crust of the earth.
    • D. all (a), (b) and (c)
    • Discuss
    • 9. Performance number of a liquid fuel is related to its

    • Options
    • A. wax content
    • B. spontaneous ignition temperature
    • C. knocking tendency
    • D. sulphur content
    • Discuss
    • 10. Older crude petroleum

    • Options
    • A. is light and better.
    • B. gives more distillates.
    • C. gives less tar.
    • D. all (a), (b) and (c).
    • Discuss


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