Petroleum Refinery Engineering problems
- 1. The most suitable solvent for deasphalting vacuum residue is
Options- A. propane
- B. methyl ethyl ketone
- C. doctor's solution
- D. methanol amine Discuss
Correct Answer: methyl ethyl ketone
- 2. The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.
Options- A. 1.2
- B. 12
- C. 120
- D. 700 Discuss
Correct Answer: 120
- 3. Cetane number of a diesel fuel is the measure of its
Options- A. ignition delay
- B. smoke point
- C. viscosity
- D. oxidation stability Discuss
Correct Answer: ignition delay
- 4. Clay treatment is used to remove
Options- A. salt from the crude oil.
- B. colour & dissolved gases from cracked gasoline.
- C. wax from lube oil.
- D. none of these. Discuss
Correct Answer: colour & dissolved gases from cracked gasoline.
- 5. Pick out the wrong statement.
Options- A. Pensky-Marten apparatus is used for determining flash points above 50°C.
- B. Characterisation factor of paraffinic crude oil is more than 12.
- C. Abel apparatus is used for determining flash points below 50°C.
- D. An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index. Discuss
Correct Answer: An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index.
- 6. 1 centistoke is equal to __________ Redwood I seconds.
Options- A. 1
- B. 4.08
- C. 0.408
- D. 40.8 Discuss
Correct Answer: 4.08
- 7. Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.
Options- A. 85
- B. 65
- C. 50
- D. 98 Discuss
Correct Answer: 85
- 8. Aniline point of high speed diesel may be about __________ °C.
Options- A. 35
- B. 70
- C. 105
- D. 150 Discuss
Correct Answer: 70
- 9. Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?
Options- A. PCM
- B. Tar
- C. Light diesel oil
- D. Low viscosity furnace oil Discuss
Correct Answer: Light diesel oil
- 10. The conductivity of crude oil-water mixture depends on the
Options- A. pH value
- B. water percentage
- C. temperature
- D. all (a), (b) and (c) Discuss
Correct Answer: all (a), (b) and (c)
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