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Petroleum Refinery Engineering

Petroleum Refinery Engineering
Fuel oil is subjected to visbreaking to reduce its

Viscosity
Pressure drop on pumping
All of these
Pour point

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

None of these
Blending component for kerosene
Feedstock for fluid catalytic cracking unit
Blending component for petrol

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Petroleum Refinery Engineering
The proper arrangement of the petroleum fractions in order of their boiling points is

Lubricating oil > diesel > petrol > LPG
Petrol > diesel > LPG > lubricating oil
Petrol > lubricating oil > diesel > LPG
Lubricating oil > petrol > diesel > LPG

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Petroleum Refinery Engineering
The catalytic cracking of heavier petroleum fraction is done to produce mainly

Gasoline
Asphalt
Diesel oil
Tar

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Petroleum Refinery Engineering
In case of liquid petrofuels, momentary combustion is observed at its

Flame temperature
Preheating temperature corresponding to viscosity of 25 centistokes
Flash point
Fire point

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Petroleum Refinery Engineering
Cetane number of diesel used in trucks may be about

35
50
14
85

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