Chemical Engineering - Petroleum Refinery Engineering

46. 

Which of the following is not an important property of fuel oil/furnace oil ?

A. Sulphur content
B. Viscosity
C. Aniline point
D. Flash point

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

47. 

Which of the followingis desirable in petrol (gasoline) but undesirable in kerosene ?

A. Paraffins
B. Aromatics
C. Mercaptans
D. Naphthenic acid

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

48. 

Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene.

A. smoke point
B. paraffins
C. aromatics
D. naphthenes

Answer: Option C

Explanation:

The Edeleanu process is a type of extraction process in the petroleum refining industry, whereby liquid sulfur dioxide is used to extract aromatics from kerosene pool, liquid SO2 selectively dissolves the aromatics leaving behind the low aromatic content kerosene as the finished product.

It is named after the Romanian chemist of Jewish origin Lazar Edeleanu. The aromatic extract is then separated from SO2 through rectification and SO2 recirculation. Temperature is maintained at -20°C.


49. 

Cracking is

A. an exothermic reaction.
B. an endothermic reaction.
C. favoured at very low temperature.
D. none of these.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

50. 

The most important property for a jet fuel is its

A. viscosity
B. freezing point
C. calorific value
D. flash point

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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