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  • Question
  • Feedstock for the production of biodiesel is


  • Options
  • A. herbal plants
  • B. used vegetable oils
  • C. LSHS
  • D. bagasse

  • Correct Answer
  • used vegetable oils 


  • Petroleum Refinery Engineering problems


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    • 1. 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

    • Options
    • A. elimination of solvent drying facility.
    • B. higher nitration temperature.
    • C. lower solvent dilution ratio.
    • D. all (a), (b) & (c).
    • Discuss
    • 2. In classification, particles are said to be equal settling, if they have the same terminal velocities in the

    • Options
    • A. different fluids
    • B. same fluid
    • C. same field of force
    • D. both (b) and (c)
    • Discuss
    • 3. Pick out the correct statement.

    • Options
    • A. The capacity and the effectiveness of a screen are the same.
    • B. The capacity and the effectiveness of screen are opposing factors.
    • C. The screening surface of a 'reel' (a revolving screen used in flour mills) is made of silk bolting cloth supported by wire mesh.
    • D. both (b) and (c).
    • Discuss
    • 4. The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

    • Options
    • A. 3 to 4
    • B. 8 to 10
    • C. 10 to 15
    • D. 15 to 20
    • Discuss
    • 5. Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called

    • Options
    • A. classification
    • B. sedimentation
    • C. clarification
    • D. decantation
    • Discuss
    • 6. Flash point of an oil is determined by the

    • Options
    • A. Pensky Martens apparatus.
    • B. Ramsbottom apparatus.
    • C. Saybolt viscometer.
    • D. Conradson apparatus.
    • Discuss
    • 7. Naphthenic acid is a/an __________ compound.

    • Options
    • A. sulphur
    • B. nitrogen
    • C. oxygen
    • D. none of these
    • Discuss
    • 8. Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature.

    • Options
    • A. more than
    • B. less than
    • C. same as
    • D. either more or less; depends on the room temperature
    • Discuss
    • 9. Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.

    • Options
    • A. 50
    • B. 70
    • C. 90
    • D. 140
    • Discuss
    • 10. The most widely used crude topping column in refineries is the __________ column.

    • Options
    • A. bubble-cap
    • B. packed bed
    • C. fluidised bed
    • D. perforated plate
    • Discuss


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