Chemical Engineering MCQs

Page No. 534

Cetane number of alpha methyl naphthalene is assumed to be_________________?


a0


b100


c50


d


View Answer 0

Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?


aAromatics


bMercaptans


cParaffins


dNaphthenic acid


View Answer Aromatics

Flash point of diesel/kerosene (>50°C) is determined by the_______________?


aAbel apparatus


bPensky-Martens apparatus


cSaybolt chromometer


dNone of these


View Answer Abel apparatus

Naphthenic acid is a/an ______________ compound?


aSulphur


bNitrogen


cOxygen


dNone of these


View Answer Oxygen

LPG when brought to atmospheric pressure & temperature will be a________________?


aLiquid lighter than water


bLiquid heavier than water


cGas lighter than air


dGas heavier than air


View Answer Gas heavier than air

Gum formation in stored gasoline is mainly due to the ____________________?


aAlkylation of unsaturated


bPresence of sulphur


cOxidation & polymerisation of unsaturated


dHigher aromatic content


View Answer Presence of sulphur

Smoke point of a good burning kerosene may be around _______________ mm?


a0-5


b20-25


c60-75


d100-120


View Answer 20-25

Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl isobutyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the____________________?


aElimination of solvent drying facility


bHigher nitration temperature


cLower solvent dilution ratio


dAll A., B. & C.


View Answer All A., B. & C.

Which of the following has the highest flash point of all ?


aDiesel


bKerosene


cPetrol


dFurnace oil


View Answer Furnace oil

Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about _______________ °C ?


a50


b70


c90


d140


View Answer 90

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