Patroleum Refinary Engineering MCQs with answers Page - 8

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Q. Paraffins are desirable in lubricating oil, as it has got high

  • (A) Viscosity
  • (B) Viscosity index
  • (C) Smoke point
  • (D) Pour point

A

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Q. Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene.

  • (A) Smoke point
  • (B) Paraffins
  • (C) Aromatics
  • (D) Naphthenes

A

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Q. Petroleum coke is commercially produced by the __________ process.

  • (A) Hydrocracking
  • (B) Visbreaking
  • (C) Fluid catalytic cracking
  • (D) Delayed coking

A

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Q. Road grade bitumen is produced from vacuum residue by its

  • (A) Aeration
  • (B) Pyrolysis
  • (C) Steam reforming
  • (D) Hydrogenation

A

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Q. Visbreaking process is used mainly for making

  • (A) High cetane diesel
  • (B) High octane gasoline
  • (C) Fuel oil
  • (D) Smoke free kerosene

A

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Q. Research octane number refers to the

  • (A) Unleaded motor fuels
  • (B) High octane number aviation fuels
  • (C) High octane number motor fuels
  • (D) Low octane number motor fuels

A

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Q. Choose the correct statement.

  • (A) Octane number of i-octane is zero
  • (B) Octane number of paraffins increases with increasing number of carbon atoms
  • (C) Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms
  • (D) The aromatics have lower octane number than naphthenes with same number of carbon atoms

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Q. Choose the correct statement.

  • (A) Coking tendency increases with increasing molecular weight
  • (B) Coking tendency decreases with increasing molecular weight
  • (C) Higher pressure enhances coke formation
  • (D) Coking is an exothermic reaction

A

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Q. The amount of tetraethyl lead added to improve the octane number of motor gasoline is around __________ c.c per gallon of petrol.

  • (A) 3
  • (B) 300
  • (C) 1000
  • (D) 3000

A

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Q. True vapour pressure of a petroleum fraction __________ Reid vapour pressure.

  • (A) Is less than
  • (B) Is more than
  • (C) Is same as
  • (D) May be either more or less than

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