Salt content of the desalted crude oils may be where ptb stands for pounds of salts measured as sodium chloride per thousand barrel
A.3 ptb
B.50 ptb
C.100 ptb
D.200 ptb
Category: Petroleum Refining Engineering Mcqs
Cetane number of normal cetane is taken to be
A.0
B.15
C.17
D.100
The density of the hydrocarbon liquids
A.remains unaffected with change in the number of carbon and hydrogen atoms in hydrocarbon molecules
B.decreases with increase in the number of carbon and hydrogen atoms in hydrocarbon molecules
C.increases with increase in the number of carbon and hydrogen atoms in hydrocarbon molecules
D.none of the above
The solvent used in the dewaxing of the waxy oil feed is
A.liquid sulphur trioxide
B.composed of methyl ethyl ketone and toluene
C.composed of triethylene glycol and water
D.platinum
Which of the following hydrocarbons are the most desirable in gasoline?
A.Paraffins
B.Isoparaffins
C.Naphthenes
D.Aromatics
Which of the following hydrocarbons are the most desirable in high speed diesel oil?
A.Aromatics
B.Naphthenes
C.Paraffins
D.Naphthenic acids
In propane deasphalting process the extractor pressure and temperature are
A.40 kgf/cm2 g and 130?C
B.1 kgf/cm2 and 30?C
C.175 kgf/cm2 g and 180?C
D.120 mm Hg and 30?C
Hydrocracking is a
A.high pressure and low temperature process
B.low pressure and high temperature process
C.low pressure and low temperature process
D.high pressure and high temperature process
Naphthenes
A.are unsaturated cyclic compounds
B.are straight chain saturated compounds
C.are saturated cyclic compounds
D.and paraffins have the same general formula CnH2n+2
Colour of the petroleum products can be determined by
A.Abel apparatus
B.Pensky -Martens apparatus
C.Saybolt chromometer
D.all of the above
