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

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

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Petroleum Refinery Engineering
Aniline point is the temperature at which

Equal volume of aniline & the test sample are completely miscible
Equal weight of diesel & the aniline are completely miscible
Aniline vaporises
Equal weight of aniline & the test sample are completely miscible

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Petroleum Refinery Engineering
Choose the correct statement regarding thermal cracking.

Greater depth of cracking gives lower octane number gasoline
At low pressure, the yield of lighter hydrocarbons are more
Increased residence time results in the decreased severity of cracking
Moderate changes in operating temperature does not change the depth of cracking

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