Chemical Engineering MCQs

Page No. 529

Which of the following gasoline (unleaded) has the least octane number ?


aCatalytically cracked gasoline

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bStraight run gasoline

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cCatalytically reformed gasoline

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dPolymer gasoline

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View Answer Straight run gasoline

A multigrade lubricating oil means an oil having high __________________?


aViscosity index

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bViscosity

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cAniline point

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dFlash point

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View Answer Viscosity index

Reforming__________________?


aUses naphtha as feedstock

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bDoes not much affect the molecular weight of the feed

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cImproves the quality & yield of gasoline

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dAll A., B. and C.

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View Answer All A., B. and C.

Feed for reforming is generally___________________?


aNaphtha or straight run gasoline

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bReduced crude

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cVacuum gas oil

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dAtmospheric gas oil

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H/C ratio (by weight) for the same number of carbon atoms is the highest in case of____________________?


aAromatics

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bParaffins

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cOlefins

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dNaphthenes

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View Answer Naphthenes

Highest quality bitumen is produced from the __________________ crude oil?


aParaffinic

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bNaphthenic

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cIntermediate

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dMixed

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View Answer Naphthenic

Molecular weight of petrol may be about ____________________?


a40-60

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b100-130

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c250-300

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d350-400

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View Answer 100-130

A typical yield of kerosene in straight run distillation of crude oil may be about __________________ percent?


a4

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b10

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c18

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d26

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View Answer 10

Casing head gasoline is the liquid __________________?


aButane

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bPropane

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cNatural gas

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dGasoline separated from wet natural gas by compression

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View Answer Butane

The pressure (kg/cm2) and temperature (°C) maintained in electrical desalters for crude oil are respectively__________________?


a10 and 120

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b1 and 200

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c50 and 250

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d10 and 300

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View Answer 1 and 200

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