The operating pressure in kgf/cm2 of electrical desalters is about
A.10
B.1
C.0.7
D.50
Category: Petroleum Refining Engineering Mcqs
Mercaptans are low boiling
A.sulphur compounds
B.oxygen compounds
C.nitrogen compounds
D.organometallic compounds
Flash points above 50?C are determined by
A.Abel apparatus
B.Saybolt chromometer
C.Pensky-Martens apparatus
D.Lovibond Tintometer
Sedimentary rocks are
A.porous
B.rough
C.hard
D.brittle
Which of the following products contains maximum sulphur?
A.LPG
B.ATF
C.LDO
D.Furance oil
The general formula of mercaptans is
A.R-S-R
B.R-S-R
C.R-S-H
D.R-SOOH
The bi-metallic catalysts used in the catalytic reforming of naphthas permit aromatics crerating reactions to occur with a minimum of hydrocracking of paraffins and naphthenes. The bi-metallic catalysts contain
A.platinum and nickel
B.nickel and vanadium
C.platinum and rhenium
D.rhenium and rhodium
Penetration index and softening point are the important tests for
A.high speed diesel oil
B.Light diesel oil
C.Kerosine
D.bitumen
Arrange the following hydrocarbons series in the increasing order of cetane number for the same number of carbon atoms 1. Paraffins 2. Naphthenes 3. Aromatics
A.Paraffins Naphthenes Aromatics
B.Aromatics Naphthenes Paraffins
C.Paraffins Aromatics Naphthenes
D.Aromatics Paraffins Naphthenes
Corrosion in crude distillation unit column overhead system is caused by
A.the presence of naphthenic acid in crude oils
B.the presence of HCI formed by dissociation of chloride salts
C.the sulphur compounds in crude oils
D.all of the above
