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- Question
Which of the following is the easiest to crack?
Options- A. Paraffins
- B. Olefins
- C. Naphthenes
- D. Aromatics
- Correct Answer
- Paraffins
- 1. __________ treatment is done for appreciable improvement in viscosity index of lubricating oil.
Options- A. Acid
- B. Solvent extraction
- C. Alkali
- D. Clay Discuss
- 2. 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
- 3. 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 Discuss
- 4. Reforming converts
Options- A. olefins into paraffins
- B. naphthenes into aromatics
- C. naphthenes into olefins.
- D. naphthenes into paraffin. Discuss
- 5. A multigrade lubricating oil means an oil having high
Options- A. viscosity index
- B. viscosity
- C. aniline point
- D. flash point Discuss
- 6. CnH2n is the general formula for
Options- A. olefins
- B. naphthenes
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 7. Octane number of n-heptane is assumed to be
Options- A. 100
- B. 0
- C. 70
- D. ? Discuss
- 8. H/C ratio (by weight) for the same number of carbon atoms is the highest in case of
Options- A. aromatics
- B. paraffins
- C. olefins
- D. naphthenes Discuss
- 9. High aniline point of a petrofuel (say diesel) indicates that
Options- A. it is highly aromatic in nature.
- B. it is highly paraffinic in nature.
- C. it has a very low diesel index.
- D. its ignition quality is very poor. Discuss
- 10. Pick out the wrong statement.
Options- A. Alkylation produces a larger iso-paraf-fin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin.
- B. Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts.
- C. All the alkylation processes use very high temperature (> 1000°C).
- D. Gasoline having an octane number of 90 can be produced by alkylation process. Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: Solvent extraction
Correct Answer: all (a), (b) and (c).
Correct Answer: 50
Correct Answer: naphthenes into aromatics
Correct Answer: viscosity index
Correct Answer: both (a) and (b)
Correct Answer: 0
Correct Answer: naphthenes
Correct Answer: it is highly paraffinic in nature.
Correct Answer: All the alkylation processes use very high temperature (> 1000°C).
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