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- Question
Crude oil is subjected to vacuum distillation in the last stage, because
Options- A. high boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose.
- B. lighter/low boiling products are prone to thermal decomposition.
- C. high purity products can be obtained thereby.
- D. none of these.
- Correct Answer
- high boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose.
- 1. Which of the following is used as a solvent in deasphalting of petroleum products?
Options- A. Furfural
- B. Propane
- C. Methyl ethyl ketone
- D. Liquid sulphur dioxide Discuss
- 2. Doctor's solution used for sweetening of petroleum products is
Options- A. sodium plumbite
- B. sodium sulphite
- C. sodium thiosulphate
- D. lead sulphate Discuss
- 3. The yield of straight run LPG from crude oil is about __________ weight percent.
Options- A. 20-25
- B. 1-1.5
- C. 10-15
- D. 0.1-0.2 Discuss
- 4. Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2 .
Options- A. 1.5
- B. 3
- C. 6
- D. 12 Discuss
- 5. Pick out the wrong statement.
Options- A. Lower boiling paraffins have higher octane number than higher paraffins.
- B. Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming process.
- C. The most ideal feedstock for thermal reforming is dearomatised kerosene.
- D. Catalyst used in catalytic reforming is platinum on silica-alumina base. Discuss
- 6. Bottom product of atmospheric pressure crude oil distillation column is termed as
Options- A. reduced crude
- B. heavy ends
- C. asphalt
- D. residuum Discuss
- 7. Catalyst used in the catalytic cracking is
Options- A. silica-alumina
- B. silica gel
- C. vanadium pentoxide
- D. nickel Discuss
- 8. Aniline point test of an oil qualitatively indicates the __________ content of an oil.
Options- A. paraffin
- B. olefin
- C. aromatic
- D. naphthene Discuss
- 9. Isomerisation converts the __________ tot-paraffins.
Options- A. paraffins
- B. olefins
- C. naphthenes
- D. none of these Discuss
- 10. Smoke point of kerosene expresses its
Options- A. burning characteristics.
- B. luminosity characteristics.
- C. aromatic content directly.
- D. lamp wick wetting characteristics. Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: Propane
Correct Answer: sodium plumbite
Correct Answer: 1-1.5
Correct Answer: 3
Correct Answer: The most ideal feedstock for thermal reforming is dearomatised kerosene.
Correct Answer: reduced crude
Correct Answer: silica-alumina
Correct Answer: aromatic
Correct Answer: paraffins
Correct Answer: burning characteristics.
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