Chemical Engineering MCQs

Page No. 80

Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is ______________________?


aUsed for making axle & shafts of aeroplanes, automobiles and locomotives


bHaving poor fatigue resistance


cHaving poor toughness


dNot helpful in producing cleaner steel due to oxidising action of vanadium



Which of the following stainless steels is non-magnetic ?


aFerritic


bMartenistic


cAustenitic


dNone of these


View Answer Austenitic

Ceramic materials__________________?


aAre exemplified by clay and mica


bAre poor electrical conductors due to lack of free electrons


cNever exhibit polymorphism


dAll A., B. and C.


View Answer All A., B. and C.

Duralumin is an alloy of_________________?


aAluminium, copper and manganese


bAluminium, nickel and silicon


cAluminium and nickel


dNone of these



Hardening of steel is not possible unless it is heated ______________ critical point?


aAbove the highest


bAbove the lowest


cBetween the first & second


dBetween the second & third


View Answer Above the lowest

DDT is shipped in_________________?


aStainless steel containers


bPaper bags


cFibre drums


dEither B. or C.


View Answer Either B. or C.

______________ is not a case hardening process?


aCarburising


bNitriding


cCyaniding


dAnnealing


View Answer Annealing

High degree of toughness is a must for__________________?


aHigh speed steel


bShock resisting steel


cCold work tool steel


dNone of these


View Answer Shock resisting steel

Which of the following is the easiest to bend ?


aSteel


bStainless steel


cCast iron


dWrought iron


View Answer Wrought iron

Vessels made of _____________ can be used to store dry chlorine?


aThermoplastic materials


bNickel


cSteel or iron


dNone of these


View Answer Steel or iron

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