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 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 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Naphtha yield in straight run distillation of crude oil may be about __________ percent. 6 18 12 2 6 18 12 2 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm² is maintained during cracking mainly to Reduce gum content in gasoline Suppress coke formation Increase the yield of light distillates Enhance the octane number of gasoline Reduce gum content in gasoline Suppress coke formation Increase the yield of light distillates Enhance the octane number of gasoline ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Clay treatment is used to remove Salt from the crude oil Wax from lube oil None of these Colour & dissolved gases from cracked gasoline Salt from the crude oil Wax from lube oil None of these Colour & dissolved gases from cracked gasoline ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Asphalts are . Low molecular weight & low boiling point compounds present in petroleum Desirable in catalytic cracking feedstock, because they produce coke Readily oxidisable and form carbonaceous sludge All of these . Low molecular weight & low boiling point compounds present in petroleum Desirable in catalytic cracking feedstock, because they produce coke Readily oxidisable and form carbonaceous sludge All of these ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following factors does not govern the mechanism of petroleum formation from organic sources? PH of the soil Heat Bacterial action Pressure PH of the soil Heat Bacterial action Pressure ANSWER DOWNLOAD EXAMIANS APP
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