Petroleum Refinery Engineering

1.  Diesel used in naval applications has a minimum cetane number of A. 25 B. 35 C. 45 D. 65

2.	Which of the following tests is not done for transformer oil ?
	A. Flash point and acid value. B. Aniline point. C. Dielectric strength. D. Copper strip corrosion test. 3.  Which is the most undesirable component in kerosene ? A. Aromatics B. i-paraffins C. n-paraffins D. Naphthenes

4.

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

A. Smoking tendency of hydrocarbons increases in the order : paraffins → isoparaffins → naphthenes → aromatics. B. Smoking tendency of paraffins increases with decrease in its molecular weight. C. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond. D. Smoking tendency of aromatics decreases with increase in its molecular weight. 5.  Solvent used in duo-sol extraction for lube oil upgradation is a mixture of A. propane & phenol-cresol mixture. B. methyl ethyl ketone & glycol. C. phenol & furfural. D. propane & liquid sulphur dioxide.

6.

Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API) ?

A. Diesel B. Gasoline C. Atmospheric gas oil D. Vacuum gas oil 7.  For gasoline, the flash point (<50°C) is determined by the A. Abel apparatus. B. Pensky-Marten's apparatus. C. Saybolt chromometer. D. none of these 8.  Flash point of atmospheric distillation residue is determined by __________ apparates. A. Pensky-Martens (closed cup type). B. Abel. C. Cleveland (open cup type) D. none of these. 9.  Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about A. 0.1 B. 1 C. 2.5 D. 3.5 10.  Pour point and freezing point is equal for A. petrol B. diesel C. water D. crude petroleum