Petroleum Refinery Engineering - Chemical Engineering Questions and Answers

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A good lubricant should have high

viscosity index

volatility

pour point

none of these

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Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol.

waxes

mercaptans

asphalt

diolefins

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The main use of heavy gas oil produced by the vacuum distillation unit is as a

blending component for kerosene.

blending component for petrol.

feedstock for fluid catalytic cracking unit.

none of these.

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Stabilisation of gasoline (petrol) means

removal of dissolved gases from it.

increasing its oxidation stability.

improving its lead susceptibility.

increasing its vapour pressure.

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In petroleum refining, the process used for conversion of hydrocarbons to aromatics is

catalytic cracking

catalytic reforming

hydrotreating

alkylation

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

determined by using a test engine.

not related to aniline point.

equal to cetane number plus 3.

all (a), (b) & (c).

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Octane number of gasoline is a measure of its

resistance to knock.

ignition delay.

ignition temperature.

smoke point.

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Pick out the additive property of a lube oil out of following.

°API gravity

Specific gravity

Viscosity

Flashpoint

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Catalyst used in catalytic reforming is

platinum on alumina

nickel

iron

aluminium chloride