Chemical Engineering MCQs

Page No. 535

Which of the following is a Naphthene ?


aButene


bButadiene


cCyclohexane


dAcetylene


View Answer Cyclohexane

Hydrocracking employs ___________________?


aHigh pressure & temperature


bLow pressure & temperature


cHigh pressure and low temperature


dHigh temperature and low pressure



Which is almost absent in crude petroleum ?


aOlefins


bMercaptans


cNaphthenes


dCycloparaffins


View Answer Mercaptans

Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic____________________?


aCracking


bPolymerisation


cReforming


dIsomerisation


View Answer Reforming

‘Solvent naphtha’ used mostly as a solvent in paints and perfumery is produced by the _________________ of virgin naphtha into small boiling range cuts?


aSteam reforming


bDistillation


cDesulphurisation


dNone of these


View Answer Distillation

Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its_________________?


aMolecular weight


bAromatics content


cBoth A. & B.


dNeither ‘a’ nor ‘b’


View Answer Both A. & B.

Octane number (unleaded) of gasoline produced by isomerisation of butane may be about __________________?


a45


b55


c70


d90


View Answer 70

Molecular weight of crude petroleum may be around________________?


a50


b250


c1500


d5000


View Answer 1500

The characterisation factor of crude petroleum oil is around__________________?


a3


b11


c22


d28


View Answer 11

True vapour pressure of a petroleum fraction ________________ Reid vapour pressure?


aIs less than


bIs more than


cIs same as


dMay be either more or less than



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