Discussion
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- Question
Which of the following has the lowest cetane number?
Options- A. Aromatics
- B. i-paraffins
- C. Naphthene
- D. Olefins
- E. n-paraffins
- Correct Answer
- Aromatics
- 1. Good quality kerosene should have
Options- A. low smoke point.
- B. high smoke point.
- C. high aromatics content.
- D. low paraffins content. Discuss
- 2. Water separometer index (modified) (WSIM) of a petrofuel is the measure of its
Options- A. emulsification tendency.
- B. water separation characteristics.
- C. water content.
- D. water absorbing capacity from atmosphere. Discuss
- 3. With increase in the molecular weight of aromatic present in kerosene, its smoking tendency
Options- A. increases
- B. decreases
- C. remains same
- D. is unpredictable Discuss
- 4. Paraffins are desirable in lubricating oil, as it has got high
Options- A. viscosity
- B. viscosity index
- C. smoke point
- D. pour point Discuss
- 5. Waxes present in petroleum products
Options- A. can be separated out by distillation.
- B. are not soluble in them.
- C. crystallise out at low temperature.
- D. decrease their viscosity. Discuss
- 6. Highest quality bitumen is produced from the __________ crude oil.
Options- A. paraffinic
- B. naphthenic
- C. intermediate
- D. mixed Discuss
- 7. 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
- 8. The most suitable solvent for deasphalting vacuum residue is
Options- A. propane
- B. methyl ethyl ketone
- C. doctor's solution
- D. methanol amine Discuss
- 9. The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.
Options- A. 1.2
- B. 12
- C. 120
- D. 700 Discuss
- 10. Cetane number of a diesel fuel is the measure of its
Options- A. ignition delay
- B. smoke point
- C. viscosity
- D. oxidation stability Discuss
Petroleum Refinery Engineering problems
Search Results
Correct Answer: high smoke point.
Correct Answer: water separation characteristics.
Correct Answer: increases
Correct Answer: smoke point
Correct Answer: crystallise out at low temperature.
Correct Answer: naphthenic
Correct Answer: 2atm & 500°C
Correct Answer: methyl ethyl ketone
Correct Answer: 120
Correct Answer: ignition delay
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