Petroleum Refinery Engineering problems
- 1. In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen
Options- A. enhances the desulphurisation process.
- B. minimises coke formation.
- C. both (a) and (b).
- D. neither (a) nor (b). Discuss
Correct Answer: both (a) and (b).
- 2. The doctor's solution comprises of sodium plumbite in
Options- A. alcohal
- B. water
- C. aqueous caustic soda
- D. soda ash Discuss
Correct Answer: aqueous caustic soda
- 3. Deoiling is the process of removal of oil from wax. It is done by the __________ process.
Options- A. solvent extraction
- B. sweating
- C. resettling
- D. all (a), (b) & (c) Discuss
Correct Answer: all (a), (b) & (c)
- 4. Hydrofining is the most recent and effective method for the
Options- A. removal of sulphur.
- B. improvement of smoke point.
- C. reduction of breathing loss.
- D. improvement of viscosity index. Discuss
Correct Answer: removal of sulphur.
- 5. The reservoir rock containing petroleum has
Options- A. low porosity
- B. high permeability
- C. high porosity
- D. both (b) and (c) Discuss
Correct Answer: both (b) and (c)
- 6. Pick out the wrong statement.
Options- A. Aromatics have higher specific gravity than paraffins,
- B. Gross calorific value (GCV) of petrofuels is equal to (12400 - 2100 ?2) where, ? is the specific gravity of the fuel at 15.5°C.
- C. Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre).
- D. Higher specific gravity of petrofuels means higher C/H ratio. Discuss
Correct Answer: Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre).
- 7. Which is the most desirable component of a good quality kerosene?
Options- A. i-paraffins
- B. Aromatics
- C. n-paraffins
- D. Naphthenes Discuss
Correct Answer: n-paraffins
- 8. Fuel oil is subjected to visbreaking to reduce its
Options- A. pour point
- B. viscosity
- C. pressure drop on pumping
- D. all (a), (b) and (c) Discuss
Correct Answer: all (a), (b) and (c)
- 9. Pour point of a petrofuel is
Options- A. multiple of 3°F.
- B. multiple of 5°F.
- C. 5°C below the temperature at which oil ceases to flow.
- D. none of these. Discuss
Correct Answer: 5°C below the temperature at which oil ceases to flow.
- 10. Clay treatment of petroleum products
Options- A. decolorises & stabilises cracked gasoline.
- B. desulphurise straight run gasoline & kerosene.
- C. adsorb arsenic from feedstock to catalytic reforming.
- D. all (a), (b) & (c). Discuss
Correct Answer: all (a), (b) & (c).
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