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Petroleum Refinery Engineering

Petroleum Refinery Engineering
Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency?

Aromatics
Naphthenes
Iso-paraffins
Paraffins

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Petroleum Refinery Engineering
Older crude petroleum

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

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

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

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Petroleum Refinery Engineering
Which of the following has the highest gum forming tendency in gosoline?

Diolefins
Naphthenes
Aromatics
Paraffins

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Petroleum Refinery Engineering
Visbreaking process is used mainly for making

High cetane diesel
High octane gasoline
Smoke free kerosene
Fuel oil

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Petroleum Refinery Engineering
Both asphalt and wax are produced by __________ base crude oils.

Mixed
Paraffin
Naphthenic
Asphalt

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