Chemical Engineering MCQs

Page No. 535

Which of the following is a Naphthene ?


aButene

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bButadiene

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cCyclohexane

✓


dAcetylene

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View Answer Cyclohexane

Hydrocracking employs ___________________?


aHigh pressure & temperature

✓


bLow pressure & temperature

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cHigh pressure and low temperature

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dHigh temperature and low pressure

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Which is almost absent in crude petroleum ?


aOlefins

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bMercaptans

✓


cNaphthenes

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dCycloparaffins

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View Answer Mercaptans

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


aCracking

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bPolymerisation

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cReforming

✓


dIsomerisation

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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

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bDistillation

✓


cDesulphurisation

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dNone of these

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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

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bAromatics content

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cBoth A. & B.

✓


dNeither ‘a’ nor ‘b’

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View Answer Both A. & B.

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


a45

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b55

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c70

✓


d90

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View Answer 70

Molecular weight of crude petroleum may be around________________?


a50

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b250

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c1500

✓


d5000

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View Answer 1500

The characterisation factor of crude petroleum oil is around__________________?


a3

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b11

✓


c22

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d28

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View Answer 11

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


aIs less than

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bIs more than

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cIs same as

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dMay be either more or less than

✓



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