Chemical Engineering MCQs

Page No. 513

Aniline point test of an oil qualitatively indicates the ______________ content of an oil?


aParaffin


bOlefin


cAromatic


dNaphthene


View Answer Aromatic

Pour point and freezing point is equal for__________________?


aPetrol


bDiesel


cWater


dCrude petroleum


View Answer Water

Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of ______________ kcal/kg?


a600-750


b250-350


c1000-1500


d2000-2500


View Answer 600-750

The characterisation factor of a crude oil is calculated as 12.5. It means that; it is________________?


aParaffinic


bNaphthenic


cNaphthenic


dNone of these


View Answer Paraffinic

Solution used in Doctor’s treatment for the removal of mercaptans is_________________?


aSodium hydroxide


bSodium plumbite


cCupric chloride


dPotassium isobutyrate


View Answer Sodium plumbite

Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is_________________?


aPropane


bDiethylene glycol


cAqueous solution (10% water) of diethylene glycol


dMethyl ethyl ketone (MEK)



Straight run petrol as compared to methyl/ethyl alcohol has_________________?


aLower calorific value


bLower octane number


cHigher specific gravity


dHigher ignition temperature


View Answer Lower octane number

______________ test is done to find out the softening point of bitumen?


aImpact


bBall and ring


cFlame


dViscosity


View Answer Ball and ring

In catalytic cracking process, olefins crack ______________ times faster than in thermal cracking process?


a100


b200-300


c1000-10000


d10


View Answer 1000-10000

Which of the following processes in oil refinery does not employ „cracking‟?


aCoking


bVisbreaking


cPyrolysis


dNone of these


View Answer None of these

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