Discussion
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- Question
The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.
Options- A. 1.2
- B. 12
- C. 120
- D. 700
- Correct Answer
- 120
- 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
- 2. Pressure & temperature maintained in catalytic cracking is about
Options- A. 2atm & 500°C
- B. 10atm & 500°C
- C. 30atm & 200°C
- D. 50atm. & 750°C Discuss
- 3. Highest quality bitumen is produced from the __________ crude oil.
Options- A. paraffinic
- B. naphthenic
- C. intermediate
- D. mixed Discuss
- 4. Which of the following has the lowest cetane number?
Options- A. Aromatics
- B. i-paraffins
- C. Naphthene
- D. Olefins
- E. n-paraffins Discuss
- 5. Good quality kerosene should have
Options- A. low smoke point.
- B. high smoke point.
- C. high aromatics content.
- D. low paraffins content. Discuss
- 6. Cetane number of a diesel fuel is the measure of its
Options- A. ignition delay
- B. smoke point
- C. viscosity
- D. oxidation stability Discuss
- 7. 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
- 8. 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
- 9. 1 centistoke is equal to __________ Redwood I seconds.
Options- A. 1
- B. 4.08
- C. 0.408
- D. 40.8 Discuss
- 10. Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.
Options- A. 85
- B. 65
- C. 50
- D. 98 Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: methyl ethyl ketone
Correct Answer: 2atm & 500°C
Correct Answer: naphthenic
Correct Answer: Aromatics
Correct Answer: high smoke point.
Correct Answer: ignition delay
Correct Answer: colour & dissolved gases from cracked gasoline.
Correct Answer: An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index.
Correct Answer: 4.08
Correct Answer: 85
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