Chemical Engineering MCQs

Page No. 539

Which of the following is not an important property of fuel oil/furnace oil ?


aSulphur content


bViscosity


cAniline point


dFlash point


View Answer Aniline point

High aniline point of a petrofuel (say diesel) indicates that ________________?


aIt is highly aromatic in nature


bIt is highly paraffinic in nature


cIt has a very low diesel index


dIts ignition quality is very poor



The vacuum maintained in vacuum distillation unit for reduced crude is about _______________ mm Hg?


a1.2


b12


c120


d700


View Answer 120

Liquefied Petroleum Gas (LPG) is mainly a mixture of _____________________?


aPropane & butane


bMethane & ethane


cHigh boiling olefins


dHigh boiling naphthenes


View Answer Propane & butane

Which of the following has the lowest cetane number ?


aAromatics


bi-paraffins


cNaphthene


dOlefins


View Answer Aromatics

Pressure & temperature maintained in catalytic cracking is about__________________?


a2 atm & 500°C


b10 atm & 500°C


c30 atm & 200°C


d50 atm & 750°C


View Answer 2 atm & 500°C

In catalytic cracking, the___________________?


aGasoline obtained has a very low octane number


bPressure & temperature is very high


cGasoline obtained has very high aromatic content


dGasoline obtained has very high amount of gum forming compounds



Carbon percentage (by weight) in crude petroleum may be about_________________?


a65


b75


c85


d95


View Answer 85

CnH2n is the general formula for_______________?


aOlefins


bNaphthenes


cBoth A. and B.


dNeither A. nor B.


View Answer Both A. and B.

Which of the following has maximum hydrogen/carbon ratio (by weight) ?


aNaphtha


bGasoline


cDiesel


dFuel oil


View Answer Gasoline

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