Chemical Engineering - Petroleum Refinery Engineering

36. 

__________ treatment is done for appreciable improvement in viscosity index of lubricating oil.

A. Acid
B. Solvent extraction
C. Alkali
D. Clay

Answer: Option B

Explanation:

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37. 

A multigrade lubricating oil means an oil having high

A. viscosity index
B. viscosity
C. aniline point
D. flash point

Answer: Option A

Explanation:

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38. 

Most widely used solvent for dewaxing is

A. methyl-ethyl-ketone (MEK)
B. naphtha
C. petroleum ether
D. sodium plumbite

Answer: Option A

Explanation:

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39. 

Liquefied Petroleum Gas (LPG) is mainly a mixture of

A. propane & butane
B. methane & ethane
C. high boiling olefins
D. high boiling naphthenes

Answer: Option A

Explanation:

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40. 

Water content in the crude oil as it comes out of oil well may be upto __________ percent.

A. 2
B. 5
C. 10
D. 25

Answer: Option D

Explanation:

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