Chemical Engineering MCQs

Page No. 526

Solvent used for dewaxing of petroleum products are____________________?


aFurfural

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bMethyl ethyl ketone (MEK)

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cPropane

✓


dBoth B. & C.

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View Answer Propane

The general formula of naphthenes is___________________?


aCnH2n + 2

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bCnH2n-6 (where, n ≥ 6)

✓


cCnHn-4

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dSame as that for olefins i.e. CnH2n

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Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with __________________?


aMethyl alcohol

✓


bEthyl alcohol

✖


cMethane

✖


dEthane

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View Answer Methyl alcohol

Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about ________________ mm Hg absolute?


a1 to 5

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b30 to 80

✓


c250 to 350

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d450 to 500

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View Answer 30 to 80

Paraffins are desirable in lubricating oil, as it has got high_____________________?


aViscosity

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bViscosity index

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cSmoke point

✓


dPour point

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View Answer Smoke point

Platforming is a ____________ process?


aMoving bed

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bFluidised bed

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cNon-regenerative & fixed bed

✓


dRegenerative

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With increase in the molecular weight of aromatic present in kerosene, its smoking tendency ?


aIncreases

✓


bDecreases

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cRemain same

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dIs unpredictable

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View Answer Increases

Which of the following is a non-regenerative fixed bed catalytic reforming process ?


aHydroforming

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bThermofor catalytic reforming

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cPlatforming

✓


dHyperforming

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View Answer Platforming

Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has__________________?


aHigh pour point and low smoke point

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bLow viscosity index

✓


cHigh self-ignition temperature

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dAll A., B. and C.

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View Answer Low viscosity index

Which of the following is desirable in petrol (gasoline) but undesirable in kerosene ?


aParaffins

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bAromatics

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cMercaptans

✓


dNaphthenic acid

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View Answer Mercaptans

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