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  • Question
  • 1 centistoke is equal to __________ Redwood I seconds.


  • Options
  • A. 1
  • B. 4.08
  • C. 0.408
  • D. 40.8

  • Correct Answer
  • 4.08 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. Pick out the wrong statement.

    • Options
    • A. Pensky-Marten apparatus is used for determining flash points above 50°C.
    • B. Characterisation factor of paraffinic crude oil is more than 12.
    • C. Abel apparatus is used for determining flash points below 50°C.
    • D. An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index.
    • Discuss
    • 2. Clay treatment is used to remove

    • Options
    • A. salt from the crude oil.
    • B. colour & dissolved gases from cracked gasoline.
    • C. wax from lube oil.
    • D. none of these.
    • Discuss
    • 3. Cetane number of a diesel fuel is the measure of its

    • Options
    • A. ignition delay
    • B. smoke point
    • C. viscosity
    • D. oxidation stability
    • Discuss
    • 4. The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.

    • Options
    • A. 1.2
    • B. 12
    • C. 120
    • D. 700
    • Discuss
    • 5. The most suitable solvent for deasphalting vacuum residue is

    • Options
    • A. propane
    • B. methyl ethyl ketone
    • C. doctor's solution
    • D. methanol amine
    • Discuss
    • 6. Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.

    • Options
    • A. 85
    • B. 65
    • C. 50
    • D. 98
    • Discuss
    • 7. Aniline point of high speed diesel may be about __________ °C.

    • Options
    • A. 35
    • B. 70
    • C. 105
    • D. 150
    • Discuss
    • 8. Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?

    • Options
    • A. PCM
    • B. Tar
    • C. Light diesel oil
    • D. Low viscosity furnace oil
    • Discuss
    • 9. The conductivity of crude oil-water mixture depends on the

    • Options
    • A. pH value
    • B. water percentage
    • C. temperature
    • D. all (a), (b) and (c)
    • Discuss
    • 10. Which of the following is not a sulphur compound present in petroleum?

    • Options
    • A. Thiophenes
    • B. Mercaptans
    • C. Sulphones
    • D. Pyroles
    • Discuss


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