Chemical Engineering MCQs

Page No. 129

Gun metal is an alloy of_________________________?


aNickel, tin and copper


bCopper, tin and zinc


cCopper, phosphorus and nickel


dManganese, phosphorus and nickel


View Answer Copper, tin and zinc

Metalloid is_______________________?


aAn element, which exhibits the properties of both metal & non metal


bHighly electronegative in nature


cAn alloy


dAll A., B. & C.



Degrees of freedom at triple point will be______________?


a0


b1


c2


d3


View Answer 0

Tin coating on metals is not done by_____________________?


aSpraying


bPowder metallurgy


cHot dipping


dElectro-deposition


View Answer Powder metallurgy

_____________ iron is produced, when molten pig iron is chilled suddenly?


aWhite cast


bGrey cast


cWrought


dNone of these


View Answer White cast

For an irreversible process involving only pressure-volume work____________________?


a (dF)T, p <0


b (dF)T, p = 0


c(dF)T, p > 0


d (dA)T, v >0


View Answer (dF)T, p <0

Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is _____________ percent?


a0.02


b0.2


c0.35


d0.5


View Answer 0.2

Which of the following is the most prone to atmospheric corrosion ?


aSilver


bIron


cTin


dCopper


View Answer Iron

Which of the following is the hardest material ?


aTopaz


bQuartz


cCorundum


dFluorite


View Answer Corundum

Cast iron compared to steel is better in__________________?


aDuctility


bFluidity & castability


cStrength


dMalleability



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