Chemical Engineering - Petroleum Refinery Engineering

6. 

Maximum viscosity of tar/PCM/fuel oil for easy and efficient atomisation in conventional burner is __________ centistokes (or 100 Redwood I seconds).

A. 5
B. 25
C. 50
D. 100

Answer: Option B

Explanation:

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7. 

Thermofer catalytic cracking process is a __________ process.

A. fixed bed
B. moving bed
C. fluidised bed
D. non-catalytic

Answer: Option D

Explanation:

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8. 

1 centistoke is equal to __________ Redwood I seconds.

A. 1
B. 4.08
C. 0.408
D. 40.8

Answer: Option B

Explanation:

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9. 

Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of

A. thermal cracking
B. gum formation
C. coking
D. discoloration

Answer: Option C

Explanation:

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10. 

Which is the most ideal feed stock for 'coking' process used for the manufacture of petroleum coke ?

A. Naphtha
B. Vacuum residue
C. Light gas oil
D. Diesel

Answer: Option B

Explanation:

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