Petroleum Refinery Engineering
Reforming

Improves the quality & yield of gasoline
All of these
Uses naphtha as feedstock
Does not much affect the molecular weight of the feed

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Petroleum Refinery Engineering
Alkylation

Causes olefins to combine with iso-paraffins
Converts iso-paraffin into olefin
Causes olefins to combine with each other
Converts olefin into paraffin

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Petroleum Refinery Engineering
Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene.

Smoking tendency of hydrocarbons increases in the order : paraffins → isoparaffins → naphthenes → aromatics
Smoking tendency of paraffins increases with decrease in its molecular weight
Smoking tendency of aromatics decreases with increase in its molecular weight
Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond

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