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- Question
In case of liquid petrofuels, momentary combustion is observed at its
Options- A. flash point.
- B. preheating temperature corresponding to viscosity of 25 centistokes.
- C. flame temperature.
- D. fire point.
- Correct Answer
- flash point.
- 1. Presence of sulphur in gasoline
Options- A. leads to corrosion.
- B. increases lead susceptibility.
- C. decreases gum formation.
- D. helps during stabilisation. Discuss
- 2. Alkylation
Options- A. causes olefins to combine with each other.
- B. causes olefins to combine with iso-paraffins.
- C. converts iso-paraffin into olefin.
- D. converts olefin into paraffin. Discuss
- 3. Polymerisation
Options- A. produces i-octane from cracked gases containing i-butane and butene.
- B. causes olefins to combine with each other.
- C. causes aromatics to combine with each other.
- D. is aimed at producing lubricating oil. Discuss
- 4. Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatisation by liquid SO2 extraction (Edeleanu process), its smoke point may become __________ mm.
Options- A. 5
- B. 10
- C. 25
- D. 100 Discuss
- 5. Naphtha yield in straight run distillation of crude oil may be about __________ percent.
Options- A. 2
- B. 6
- C. 12
- D. 18 Discuss
- 6. In sweetening process, solutizer agent used with caustic alkali is
Options- A. potassium isobutyrate
- B. sodium plumbite
- C. methanol
- D. phenol Discuss
- 7. Molecular weight of crude oil is in the range of
Options- A. 100-120
- B. 230-250
- C. 450-550
- D. 600-850 Discuss
- 8. Which one is preferred for aircraft engine?
Options- A. High viscosity index lube oil.
- B. Low viscosity index lube oil.
- C. High freezing point aviation fuel.
- D. None of these. Discuss
- 9. Pick out the correct statement about catalytic polymerisation.
Options- A. H2SO4 polymerisation process gives gasoline rich in unsaturates.
- B. In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive.
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 10. In solutizer sweetening process, solutizer solution used is
Options- A. methanol in Unisol process.
- B. naphthenic acid in Mercapsol process.
- C. both (a) and (b).
- D. neither (a) nor (b). Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: leads to corrosion.
Correct Answer: causes olefins to combine with iso-paraffins.
Correct Answer: causes olefins to combine with each other.
Correct Answer: 25
Correct Answer: 6
Correct Answer: potassium isobutyrate
Correct Answer: 230-250
Correct Answer: High viscosity index lube oil.
Correct Answer: In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive.
Correct Answer: both (a) and (b).
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