Chemical Engineering - Petroleum Refinery Engineering

46. 

Octane number of n-heptane is assumed to be

A. 100
B. 0
C. 70
D.

Answer: Option B

Explanation:

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47. 

Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.

A. 1 to 5
B. 30 to 80
C. 250 to 350
D. 450 to 500

Answer: Option B

Explanation:

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48. 

Which of the following petroleum products contain minimum sulphur ?

A. Naphtha
B. Kerosene
C. LSHS
D. Furnace oil

Answer: Option A

Explanation:

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49. 

Concentration of H2SO4 catalyst in alkyla-tion is kept between 90-98%, because H2SO4 having concentration

A. less than 90% promotes polymerisation.
B. more than 98% promotes cracking.
C. both (a) and (b).
D. neither (a) nor (b).

Answer: Option C

Explanation:

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50. 

High aniline point of a petrofuel (say diesel) indicates that

A. it is highly aromatic in nature.
B. it is highly paraffinic in nature.
C. it has a very low diesel index.
D. its ignition quality is very poor.

Answer: Option B

Explanation:

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