Chemical Engineering MCQs

Page No. 536

A typical yield of diesel in straight run distillation of crude oil may be about ________________ percent?


a8


b18


c28


d35


View Answer 8

Crude topping column operates at ________________ pressure?


aAtmospheric


b10 atm


cVacuum


d3 atm


View Answer Atmospheric

Catalyst used in the catalytic polymerisation is__________________?


aPhosphoric acid on kieselguhr


bAluminium chloride


cNickel


dVanadium pentoxide



Gasoline extracted from natural gas (by compression and cooling) is called the ___________ gasoline?


aPolymer


bUnleaded


cCasing head


dStraight run


View Answer Unleaded

_____________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation?


aMagnesium


bPotassium


cCalcium


dSodium


View Answer Magnesium

Clay treatment is used to remove ___________________ ?


aSalt from the crude oil


bColour & dissolved gases from cracked gasoline


cWax from lube oil


dNone of these


View Answer Wax from lube oil

Which of the following is the easiest to crack ?


aParaffins


bOlefins


cNaphthenes


dAromatics


View Answer Paraffins

Which parameter is used for the grading of paraffin waxes ?


aSpecific gravity


bMelting point


cViscosity


dPenetration number


View Answer Viscosity

Higher vapour pressure of gasoline indicates _________________?


aLow flash point


bHigh breathing loss


cBoth A. and B.


dNeither A. nor B.


View Answer Neither A. nor B.

1 centistoke is equal to ______________ Redwood I seconds?


a1


b4.08


c0.408


d40.8


View Answer 4.08

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