Chemical Engineering MCQs

Page No. 814

With increase in steam pressure, its specific volume decreases ____________________?


aRapidly first and then slowly


bLinearly


cSlowly first and then rapidly


dExponentially



Powder metallurgy process does not make metal powder by_________________________?


aAtomisation


bGrinding/milling


cHammering


dElectrolytic deposition


View Answer Hammering

Vernier calipers cannot be used to measure the______________________?


aI.D. & O.D. of the shaft


bThickness of parts


cDepth of holes


dClearance between two mating surfaces



What is the value of entropy at 273°K ?


a0


b1


c


dNone of these


View Answer 0

The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding _______________ grinding wheel is normally used ?


aHard


bSoft


cSilicon carbide


dSilicon carbide


View Answer Silicon carbide

Stainless steel is welded with difficulty because of____________________?


aIts high melting temperature


bChances of cracking


cOxide film formation


dChromium carbide formation


View Answer Oxide film formation

_____________________ of grey cast iron produces white cast iron?


aTempering


bRapid heating


cRapid cooling


dSlow cooling


View Answer Rapid heating

Sudden fall of atmospheric pressure by a large amount is an indication of the_____________________?


aRain


bCold wave


cStorm


dFair weather


View Answer Storm

Which of the following is not a charge material for cupola ?


aLimestone


bIron scrap


cIron ore


dPig iron


View Answer Iron ore

Transformation range for ferrous material is the temperature interval during which ___________________ is formed during its heating?


aCementite


bAustenite


cMartensite


dPearlite


View Answer Austenite

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