Discussion
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- Question
Pick out the wrong statement.
Options- A. Iso-paraffin crack faster than n-paraf-fin.
- B. Catalytic cracking is endothermic, but the regeneration of catalyst is exothermic.
- C. Rate of decomposition of olefins in catalytic cracking is slightly slower than the thermal cracking.
- D. None of these.
- Correct Answer
- Catalytic cracking is endothermic, but the regeneration of catalyst is exothermic.
- 1. Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about __________ kms.
Options- A. 0.1 to 0.5
- B. 1.5 to 4.5
- C. 7.5 to 12.5
- D. 15-20 Discuss
- 2. Which of the following is desirable in diesel and kerosene but is undersirable in gasoline?
Options- A. Aromatics
- B. Mercaptans
- C. Paraffins
- D. Naphthenic acid Discuss
- 3. Gum formation in stored gasoline is mainly due to the
Options- A. alkylation of unsaturates.
- B. presence of sulphur.
- C. oxidation & polymerisation of unsaturates.
- D. higher aromatic content. Discuss
- 4. Octane number of gasoline produced by two stage fluidised catalytic cracking process is
Options- A. 80
- B. 87
- C. 92
- D. 97 Discuss
- 5. An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating.
Options- A. 5
- B. 15
- C. 40
- D. 60 Discuss
- 6. Pick out the wrong statement.
Options- A. Higher specific gravity of petroleum products means higher C/H ratio.
- B. Aromatics have lower specific gravity than corresponding paraffins.
- C. Hydrocarbons of low specific gravity (e.g, paraffins) possess the maximum thermal energy per unit volume.
- D. Hydrocarbons of high specific gravity (eg, aromatics) possess the maximum thermal energy per unit weight. Discuss
- 7. Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.
Options- A. polymer
- B. unleaded
- C. casing head
- D. straight run Discuss
- 8. Olefins are
Options- A. saturated hydrocarbons.
- B. unsaturated cyclic compounds (hydrocarbons).
- C. present in substantially good quantity in crude petroleum.
- D. none of these. Discuss
- 9. Solvent used for dewaxing of petroleum products are
Options- A. furfural
- B. methyl ethyl ketone (MEK)
- C. propane
- D. both(b)&(c) Discuss
- 10. Which of the following categories of gasoline has the highest lead susceptibility?
Options- A. Straight run gasoline
- B. Platinum reformed gasoline
- C. Catalytical cracked gasoline
- D. Polymer gasoline Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: 1.5 to 4.5
Correct Answer: Paraffins
Correct Answer: presence of sulphur.
Correct Answer: 97
Correct Answer: 40
Correct Answer: Aromatics have lower specific gravity than corresponding paraffins.
Correct Answer: unleaded
Correct Answer: none of these.
Correct Answer: propane
Correct Answer: Straight run gasoline
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