Chemical Engineering MCQs

Page No. 526

Solvent used for dewaxing of petroleum products are____________________?


aFurfural


bMethyl ethyl ketone (MEK)


cPropane


dBoth B. & C.


View Answer Propane

The general formula of naphthenes is___________________?


aCnH2n + 2


bCnH2n-6 (where, n ≥ 6)


cCnHn-4


dSame as that for olefins i.e. CnH2n



Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with __________________?


aMethyl alcohol


bEthyl alcohol


cMethane


dEthane


View Answer Methyl alcohol

Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about ________________ mm Hg absolute?


a1 to 5


b30 to 80


c250 to 350


d450 to 500


View Answer 30 to 80

Paraffins are desirable in lubricating oil, as it has got high_____________________?


aViscosity


bViscosity index


cSmoke point


dPour point


View Answer Smoke point

Platforming is a ____________ process?


aMoving bed


bFluidised bed


cNon-regenerative & fixed bed


dRegenerative



With increase in the molecular weight of aromatic present in kerosene, its smoking tendency ?


aIncreases


bDecreases


cRemain same


dIs unpredictable


View Answer Increases

Which of the following is a non-regenerative fixed bed catalytic reforming process ?


aHydroforming


bThermofor catalytic reforming


cPlatforming


dHyperforming


View Answer Platforming

Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has__________________?


aHigh pour point and low smoke point


bLow viscosity index


cHigh self-ignition temperature


dAll A., B. and C.


View Answer Low viscosity index

Which of the following is desirable in petrol (gasoline) but undesirable in kerosene ?


aParaffins


bAromatics


cMercaptans


dNaphthenic acid


View Answer Mercaptans

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