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Petroleum Refinery Engineering

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

None of these
Tetraethyl lead
Ethyl nitrate or acetone
Tetramethyllead

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Petroleum Refinery Engineering
Higher viscosity of lubricating oil usually signifies

Lower Reid vapour pressure
Higher acid number
Higher flash point and fire point
Lower flash point and fire point

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Petroleum Refinery Engineering
Diesel index.(an alternative index for expressing the quality of diesel) is

Not related to aniline point
All of these
Determined by using a test engine
Equal to cetane number plus 3

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Petroleum Refinery Engineering
Carbon percentage (by weight) in crude petroleum may be about

85
65
75
95

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Petroleum Refinery Engineering
Older crude petroleum

Gives more distillates
Is light and better
Gives less tar
All of these

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Petroleum Refinery Engineering
Glycol added to petrol acts as a/an __________ agent.

Anti-icing
Anti-knocking
Anti-gum forming
Dewaxing

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