Petroleum Refinery Engineering problems
- 1. Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to
Options- A. increase its smoke point.
- B. improve its oxidation stability.
- C. decrease the breathing loss.
- D. none of these. Discuss
Correct Answer: improve its oxidation stability.
- 2. Testing of the knocking characteristics of petrofuels is done in a __________ engine.
Options- A. Carnot
- B. CFR (Co-operative fuel research)
- C. Stirling
- D. diesel Discuss
Correct Answer: CFR (Co-operative fuel research)
- 3. Mercaptans is represented as (where R and R' are alkyl groups)
Options- A. R-COOH
- B. R-S-H
- C. R-S-R
- D. R-S-R' Discuss
Correct Answer: R-S-H
- 4. Name the hydrocarbon having the poorest oxidation stability.
Options- A. naphthene
- B. olefin
- C. paraffin
- D. aromatics Discuss
Correct Answer: aromatics
- 5. Glycol added to petrol acts as a/an __________ agent.
Options- A. anti-knocking
- B. anti-icing
- C. anti-gum forming
- D. dewaxing Discuss
Correct Answer: anti-icing
- 6. Electrical desalting of crude oil removes the __________ impurities.
Options- A. oleophilic
- B. oleophobic
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
Correct Answer: oleophobic
- 7. Deoiling of wax is done by its
Options- A. heating
- B. cooling
- C. solvent extraction
- D. both(b)&(c) Discuss
Correct Answer: both(b)&(c)
- 8. During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water.
Options- A. decreases
- B. increases
- C. remains unchanged
- D. decreases linearly Discuss
Correct Answer: increases
- 9. Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its
Options- A. molecular weight
- B. aromatics content
- C. both a & b
- D. neither a nor b Discuss
Correct Answer: both a & b
- 10. An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating.
Options- A. 5
- B. 15
- C. 40
- D. 60 Discuss
Correct Answer: 40
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