Chemical Engineering MCQs

Page No. 529

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


aCatalytically cracked gasoline


bStraight run gasoline


cCatalytically reformed gasoline


dPolymer gasoline


View Answer Straight run gasoline

A multigrade lubricating oil means an oil having high __________________?


aViscosity index


bViscosity


cAniline point


dFlash point


View Answer Viscosity index

Reforming__________________?


aUses naphtha as feedstock


bDoes not much affect the molecular weight of the feed


cImproves the quality & yield of gasoline


dAll A., B. and C.


View Answer All A., B. and C.

Feed for reforming is generally___________________?


aNaphtha or straight run gasoline


bReduced crude


cVacuum gas oil


dAtmospheric gas oil



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


aAromatics


bParaffins


cOlefins


dNaphthenes


View Answer Naphthenes

Highest quality bitumen is produced from the __________________ crude oil?


aParaffinic


bNaphthenic


cIntermediate


dMixed


View Answer Naphthenic

Molecular weight of petrol may be about ____________________?


a40-60


b100-130


c250-300


d350-400


View Answer 100-130

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


a4


b10


c18


d26


View Answer 10

Casing head gasoline is the liquid __________________?


aButane


bPropane


cNatural gas


dGasoline separated from wet natural gas by compression


View Answer Butane

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


a10 and 120


b1 and 200


c50 and 250


d10 and 300


View Answer 1 and 200

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