Chemical Engineering - Petroleum Refinery Engineering

16. 

Most commonly used crude heater before the fractionation tower in a refinery is the __________ heater.

A. electric immersion
B. pipestill
C. steam coil
D. none of these

Answer: Option B

Explanation:

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17. 

Viscosity index of a lubricating oil

A. is the measure of its flash point.
B. is the measure of variation of viscosity with temperature.
C. should be low.
D. none of these.

Answer: Option B

Explanation:

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18. 

Visbreaking process is used mainly for making

A. high cetane diesel
B. high octane gasoline
C. fuel oil
D. smoke free kerosene

Answer: Option C

Explanation:

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19. 

Operating condition in the electrical dehydrators for crude oil is about

A. 6.5 kgf/Cm2 & 95°C.
B. 1 atm. & 110 °C.
C. 20 kgf/cm2 & 110°C.
D. 50 atm. and 150°C.

Answer: Option A

Explanation:

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20. 

Crude oil is pumped by a __________ pump.

A. gear
B. centrifugal
C. screw
D. reciprocating

Answer: Option B

Explanation:

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