Chemical Engineering - Petroleum Refinery Engineering

41. 

Waxy crudes are treated with chemical additives mainly to

A. depress its pour point
B. dissolve wax
C. precipitate wax
D. remove wax

Answer: Option A

Explanation:

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42. 

__________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.

A. Magnesium
B. Potassium
C. Calcium
D. Sodium

Answer: Option A

Explanation:

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43. 

Molecular weight of petrol may be about

A. 40-60
B. 100-130
C. 250-300
D. 350-400

Answer: Option B

Explanation:

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44. 

Which of the following factors does not govern the mechanism of petroleum formation from organic sources ?

A. pH of the soil
B. Bacterial action
C. Heat
D. Pressure

Answer: Option A

Explanation:

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45. 

Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).

A. 5-10
B. 30-80
C. 150-250
D. 350-400

Answer: Option B

Explanation:

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