Petroleum Refinery Engineering Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about __________ ppm. 5000 1 50 10000 5000 1 50 10000 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline. Polymer Unleaded Casing head Straight run Polymer Unleaded Casing head Straight run ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene. Smoking tendency of paraffins increases with decrease in its molecular weight Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond Smoking tendency of aromatics decreases with increase in its molecular weight 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 naphthenes decreases with its increasing molecular weight & also on addition of double bond Smoking tendency of aromatics decreases with increase in its molecular weight Smoking tendency of hydrocarbons increases in the order : paraffins → isoparaffins → naphthenes → aromatics ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Gum formation in stored gasoline is mainly due to the Alkylation of unsaturates Presence of sulphur Higher aromatic content Oxidation & polymerisation of unsaturates Alkylation of unsaturates Presence of sulphur Higher aromatic content Oxidation & polymerisation of unsaturates ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pour point of a petrofuel is Multiple of 5°F 5°C below the temperature at which oil ceases to flow Multiple of 3°F None of these Multiple of 5°F 5°C below the temperature at which oil ceases to flow Multiple of 3°F None of these ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Most widely used solvent for dewaxing is Sodium plumbite Methyl-ethyl-ketone (MEK) Petroleum ether Naphtha Sodium plumbite Methyl-ethyl-ketone (MEK) Petroleum ether Naphtha ANSWER DOWNLOAD EXAMIANS APP
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