Petroleum Refinery Engineering Which of the following additives improves the cetane number of diesel? Amyl nitrate Ethyl mercaptan Tetra ethyl lead Napthenic acid Amyl nitrate Ethyl mercaptan Tetra ethyl lead Napthenic acid ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Name the hydrocarbon having the poorest oxidation stability. Aromatics Paraffin Naphthene Olefin Aromatics Paraffin Naphthene Olefin ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pour point of a petrofuel is Multiple of 5°F Multiple of 3°F 5°C below the temperature at which oil ceases to flow None of these Multiple of 5°F Multiple of 3°F 5°C below the temperature at which oil ceases to flow None of these 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 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 Smoking tendency of hydrocarbons increases in the order : paraffins → isoparaffins → naphthenes → aromatics Smoking tendency of paraffins increases with decrease in its molecular weight ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering The proper arrangement of the petroleum fractions in order of their boiling points is Petrol > diesel > LPG > lubricating oil Petrol > lubricating oil > diesel > LPG Lubricating oil > diesel > petrol > LPG Lubricating oil > petrol > diesel > LPG Petrol > diesel > LPG > lubricating oil Petrol > lubricating oil > diesel > LPG Lubricating oil > diesel > petrol > LPG Lubricating oil > petrol > diesel > LPG ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pick out the undesirable property for a solvent meant for dewaxing of lube oil. High solubility of wax in the solvent Both A & B Neither A nor B Complete miscibility with oil High solubility of wax in the solvent Both A & B Neither A nor B Complete miscibility with oil ANSWER DOWNLOAD EXAMIANS APP
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