Chemical Engineering - Petroleum Refinery Engineering

1. 

Hydrogen percentage (by weight) in crude petroleum may be about

A. 5
B. 15
C. 25
D. 35

Answer: Option B

Explanation:

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2. 

Which of the following is an additive used for improving the cetane number of diesel ?

A. Tetraethyl lead
B. Tetramethyllead
C. Ethyl nitrate or acetone
D. None of these

Answer: Option A

Explanation:

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3. 

Tetra-ethyl lead is added in gasoline to

A. increase its smoke point.
B. reduce gum formation.
C. reduce the pour point.
D. increase its octane number.

Answer: Option D

Explanation:

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4. 

Aromatics are desired constituents of

A. lubricating oil
B. diesel
C. kerosene
D. petrol

Answer: Option D

Explanation:

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5. 

Crude topping column operates at __________ pressure.

A. atmospheric
B. 10 atm
C. vacuum
D. 3 atm.

Answer: Option A

Explanation:

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