191. Smoke point of kerosene expresses its
burning characteristics.
luminosity characteristics.
aromatic content directly.
lamp wick wetting characteristics.
✅ The correct answer is option A.
Petroleum Refinery Engineering MCQs
192. __________ determination is not a very significant and important test for gasoline.
Gum & sulphur content
Viscosity
Octane number
Reid vapor pressure
✅ The correct answer is option B.
193. The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to
obviate catalyst poisoning.
maintain the reaction temperature.
sustain the reactor pressure.
hydrogenate the feed stock.
✅ The correct answer is option C.
194. 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 naphthenes decreases with its increasing molecular weight & also on addition of double bond.
Smoking tendency of aromatics decreases with increase in its molecular weight.
✅ The correct answer is option B.
195. Sulphuric acid treatment of petroleum products removes the __________ materials.
gum forming
color forming
asphaltic
all (a), (b) & (c)
✅ The correct answer is option D.
196. The main reaction in reforming is the
dehydrogenation of naphthenes.
hydrogenation of naphthenes.
hydrocracking of paraffins.
saturation of olefins.
✅ The correct answer is option A.
197. Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2 .
1.5
3
6
12
✅ The correct answer is option B.
198. Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene ?
Reforming
Pyrolysis
Alkylation
Hydrocracking
✅ The correct answer is option A.
199. Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with
methyl alcohol
ethyl alcohol
methane
ethane
✅ The correct answer is option A.
200. Flash point of atmospheric distillation residue is determined by __________ apparates.
Pensky-Martens (closed cup type).
Abel.
Cleveland (open cup type)
none of these.
✅ The correct answer is option C.