Petroleum Refinery Engineering(Chemical Engineering ) Questions and Answers
Question 1. Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).
0.03
3
35
70
Explanation:-
Answer: Option B. -> 3
Question 2. 1 centistoke is equal to __________ Redwood I seconds.
1
4.08
0.408
40.8
Explanation:-
Answer: Option B. -> 4.08
Question 3. Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.
85
65
50
98
Explanation:-
Answer: Option A. -> 85
Question 4. Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than __________ mg/kg of kerosene.
1
20
100
500
Explanation:-
Answer: Option B. -> 20
Question 5. Aniline point test of an oil qualitatively indicates the __________ content of an oil.
Paraffin
Olefin
Aromatic
Naphthene
Explanation:-
Answer: Option C. -> Aromatic
Question 6. Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about
0.1
1
2.5
3.5
Explanation:-
Answer: Option B. -> 1
Question 7. Aromatics are desired constituents of
Lubricating oil
Diesel
Kerosene
Petrol
Explanation:-
Answer: Option D. -> Petrol
Question 8. Cracking is
An exothermic reaction
An endothermic reaction
Favoured at very low temperature
None of these
Explanation:-
Answer: Option B. -> An endothermic reaction
Question 9. Which one is used to determine the colour of petroleum products?
Colour comparator
Saybolt chromometer
Cleveland apparatus
None of these
Explanation:-
Answer: Option A. -> Colour comparator
Question 10. 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.
