Patroleum Refinary Engineering MCQs with answers Page - 4

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Q. Pick out the wrong statement.

  • (A) Higher specific gravity of petroleum products means higher C/H ratio
  • (B) Hydrocarbons of low specific gravity (e.g, paraffins) possess the maximum thermal energy per unit volume
  • (C) Aromatics have lower specific gravity than corresponding paraffins
  • (D) Hydrocarbons of high specific gravity (eg, aromatics) possess the maximum thermal energy per unit weight

A

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Q. Crude oil is transported inland from oil field to refineries, mainly by the

  • (A) Road tankers
  • (B) Rail tankers
  • (C) Underground pipelines
  • (D) None of these

A

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Q. Fuel oil is subjected to visbreaking to reduce its

  • (A) Pour point
  • (B) Viscosity
  • (C) Pressure drop on pumping
  • (D) All of the above

A

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Q. Deoiling of wax is done by its

  • (A) Heating
  • (B) Cooling
  • (C) Solvent extraction
  • (D) Both B & C

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Q. The proper arrangement of the petroleum fractions in order of their boiling points is

  • (A) Lubricating oil > diesel > petrol > LPG
  • (B) Lubricating oil > petrol > diesel > LPG
  • (C) Petrol > lubricating oil > diesel > LPG
  • (D) Petrol > diesel > LPG > lubricating oil

A

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Q. Diesel index is defined as

  • (A) (°API) × (Aniline Point, °C)/100
  • (B) (°API) × (Aniline Point, °F)/100
  • (C) (°API) × (100)/Aniline Point, °C
  • (D) (°API) × (100)/Aniline Point, °F

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Q. Furfural solvent extraction is used for upgrading (by dissolving aromatics)

  • (A) Cracking feedstock
  • (B) Wax
  • (C) Lubricating oils
  • (D) Naphtha

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Q. Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to

  • (A) Increase its smoke point
  • (B) Improve its oxidation stability
  • (C) Decrease the breathing loss
  • (D) None of these

A

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Q. Which of the following categories of gasoline has the highest lead susceptibility?

  • (A) Straight run gasoline
  • (B) Platinum reformed gasoline
  • (C) Catalytical cracked gasoline
  • (D) Polymer gasoline

A

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Q. The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to

  • (A) Obviate catalyst poisoning
  • (B) Maintain the reaction temperature
  • (C) Sustain the reactor pressure
  • (D) Hydrogenate the feed stock

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