Chemical Engineering - Petroleum Refinery Engineering

41. 

Operating temperature and pressure in catalytic reforming is about

A. 1-5 Kgf/cm2 & 200°C.
B. 15-45 Kgf/cm2 & 450-550°C.
C. 50 - 75 kgf/cm2 & 600 - 800°C.
D. 5-10 kgf/cm2 & 150 - 250°C.

Answer: Option B

Explanation:

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42. 

With increase in density, the viscosity of petroleum products

A. increases
B. decreases
C. remains same
D. either (a) or (b)

Answer: Option A

Explanation:

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43. 

Detergent is added as an additive in engine lubricating oil to

A. reduce deposit formation.
B. keep contaminants in suspension.
C. increase oxidation stability.
D. prevent rusting.

Answer: Option A

Explanation:

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44. 

Removal of light fractions from crude oil is called its

A. sweetening
B. dehydration
C. stabilisation
D. visbreaking

Answer: Option C

Explanation:

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45. 

Pick out the wrong statement.

A. Lower boiling paraffins have higher octane number than higher paraffins.
B. Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming process.
C. The most ideal feedstock for thermal reforming is dearomatised kerosene.
D. Catalyst used in catalytic reforming is platinum on silica-alumina base.

Answer: Option C

Explanation:

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