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

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bMelting point

✖


cViscosity

✓


dPenetration number

✖


View Answer Viscosity

Higher vapour pressure of gasoline indicates _________________?


aLow flash point

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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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