Chemical Engineering - Petroleum Refinery Engineering

21. 

Choose the correct statement.

A. Octane number of i-octane is zero.
B. Octane number of paraffins increases with increasing number of carbon atoms.
C. Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms.
D. The aromatics have lower octane number than naphthenes with same number of carbon atoms.

Answer: Option C

Explanation:

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22. 

Which is the most effective catalyst used in catalytic cracking of petroleum products ?

A. Iron oxide
B. Nickel
C. Vanadium pentoxide
D. Zeolite

Answer: Option D

Explanation:

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23. 

Maximum use of petroleum coke is in

A. adsorption refining operation.
B. fuel gas manufacture.
C. carbon electrode manufacture.
D. iron ore reduction.

Answer: Option C

Explanation:

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24. 

Carbon/hydrogen ratio (by weight) is maximum (out of following) for

A. gasoline
B. kerosene
C. light gas oil
D. heavy fuel oil

Answer: Option A

Explanation:

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25. 

The catalytic cracking of heavier petroleum fraction is done to produce mainly

A. gasoline
B. asphalt
C. diesel oil
D. tar

Answer: Option C

Explanation:

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