Petroleum Refinery Engineering problems
- 1. Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene?
Options- A. Reforming
- B. Pyrolysis
- C. Alkylation
- D. Hydrocracking Discuss
Correct Answer: Reforming
- 2. Catalyst used in the isomerisation is
Options- A. aluminium chloride
- B. alumina
- C. nickel
- D. phosphoric acid Discuss
Correct Answer: aluminium chloride
- 3. Petroleum coke is used mainly .in the
Options- A. discoloration of yellow glycerine.
- B. sugar refining.
- C. manufacture of carbon electrode.
- D. blast furnace for reduction of iron ore. Discuss
Correct Answer: manufacture of carbon electrode.
- 4. Pick out the correct statement.
Options- A. Paraffins have higher octane number than corresponding iso-paraffin.
- B. Paraffins have lower smoke point than aromatics.
- C. Suitability of kerosene as a fuel & as an illuminant may be determined by char value test.
- D. Aviation fuel should have very high cloud point. Discuss
Correct Answer: Paraffins have lower smoke point than aromatics.
- 5. In catalytic alkylation, higher iso-butane to olefin ratio gives
Options- A. low final boiling point product
- B. higher yield
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
Correct Answer: low final boiling point product
- 6. Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is
Options- A. propane.
- B. diethylene glycol.
- C. aqueous solution (10% water) of diethylene glycol.
- D. methyl ethyl ketone (MEK). Discuss
Correct Answer: aqueous solution (10% water) of diethylene glycol.
- 7. In catalytic cracking process, olefins crack __________ times faster than in thermal cracking process.
Options- A. 100
- B. 200-300
- C. 1000-10000
- D. 10 Discuss
Correct Answer: 1000-10000
- 8. Crude petroleum oil is a __________ fuel.
Options- A. primary
- B. fossil
- C. both (a) & (b)
- D. secondary Discuss
Correct Answer: both (a) & (b)
- 9. Which of the following processes consumes hydrogen?
Options- A. Fluid catalytic cracking
- B. Visbreaking
- C. Propane deasphalting
- D. None of these Discuss
Correct Answer: Fluid catalytic cracking
- 10. Pick out the wrong statement.
Options- A. Multigrade lubricating oils have high viscosity index.
- B. Paraffinic oil has very high viscosity index.
- C. Naphthenic oil has very low viscosity index.
- D. High viscosity index means a large change in viscosity with change in temperature. Discuss
Correct Answer: High viscosity index means a large change in viscosity with change in temperature.
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