Discussion
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- Question
Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about __________ ppm.
Options- A. 1
- B. 50
- C. 5000
- D. 10000
- Correct Answer
- 50
- 1. Reforming converts
Options- A. olefins into paraffins
- B. naphthenes into aromatics
- C. naphthenes into olefins.
- D. naphthenes into paraffin. Discuss
- 2. A multigrade lubricating oil means an oil having high
Options- A. viscosity index
- B. viscosity
- C. aniline point
- D. flash point Discuss
- 3. Water content in the crude oil as it comes out of oil well may be upto __________ percent.
Options- A. 2
- B. 5
- C. 10
- D. 25 Discuss
- 4. Pick out the wrong statement.
Options- A. A pale color of petroleum product indicates lower viscosity.
- B. Color of petroleum products indicates the degree of refinement.
- C. Lighter petroleum distillates are lighter in color than the heavier residual oils.
- D. Flouroscene of oils helps to detect its adulteration. Discuss
- 5. Waxy crudes are treated with chemical additives mainly to
Options- A. depress its pour point
- B. dissolve wax
- C. precipitate wax
- D. remove wax Discuss
- 6. Reforming
Options- A. uses naphtha as feedstock.
- B. does not much affect the molecular weight of the feed.
- C. improves the quality & yield of gasoline.
- D. all (a), (b) and (c). Discuss
- 7. __________ treatment is done for appreciable improvement in viscosity index of lubricating oil.
Options- A. Acid
- B. Solvent extraction
- C. Alkali
- D. Clay Discuss
- 8. Which of the following is the easiest to crack?
Options- A. Paraffins
- B. Olefins
- C. Naphthenes
- D. Aromatics Discuss
- 9. CnH2n is the general formula for
Options- A. olefins
- B. naphthenes
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 10. Octane number of n-heptane is assumed to be
Options- A. 100
- B. 0
- C. 70
- D. ? Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: naphthenes into aromatics
Correct Answer: viscosity index
Correct Answer: 25
Correct Answer: A pale color of petroleum product indicates lower viscosity.
Correct Answer: depress its pour point
Correct Answer: all (a), (b) and (c).
Correct Answer: Solvent extraction
Correct Answer: Paraffins
Correct Answer: both (a) and (b)
Correct Answer: 0
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