Chemical Engineering MCQs

Page No. 533

Tanks used for the storage of petroleum products (which are inflammable) should be painted with a ______________ paint?


aBlack


bWhite


cRed


dYellow


View Answer White

Butadiene is a/an_________________?


aDi-olefin


bNaphthene


cAromatic


dOlefin


View Answer Di-olefin

The main use of heavy gas oil produced by the vacuum distillation unit is as a_____________________?


aBlending component for kerosene


bBlending component for petrol


cFeedstock for fluid catalytic cracking unit


dNone of these



The most widely used crude topping column in refineries is the ______________ column?


aBubble-cap


bPacked bed


cFluidised bed


dPerforated plate


View Answer Bubble-cap

Most commonly used crude heater before the fractionation tower in a refinery is the ______________ heater?


aElectric immersion


bPipestill


cSteam coil


dNone of these


View Answer Pipestill

Glycol added to petrol acts as a/an ________________ agent ?


aAnti-knocking


bAnti-icing


cAnti-gum forming


dDewaxing


View Answer Anti-icing

Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about_________________?


a0.1


b1


c2.5


d3.5


View Answer 1

Antioxidants are added in petrol to _____________________?


aImpart colour to it, for easy identification


bMinimise the gum formation


cPrevent icing of the carburettor


dPrevent the lead build up in engines



Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?


aSmoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins → naphthenes → aromatics


bSmoking tendency of paraffins increases with decrease in its molecular weight


cSmoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond


dSmoking tendency of aromatics decreases with increase in its molecular weight



Mercaptans is represented as (where R and R’ are alkyl groups) _____________________?


aR-COOH


bR-S-H


cR-S-R


dR-S-R’


View Answer R-S-H

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