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

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bHaving poor fatigue resistance

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cHaving poor toughness

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

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Which of the following stainless steels is non-magnetic ?


aFerritic

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bMartenistic

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cAustenitic

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dNone of these

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View Answer Austenitic

Ceramic materials__________________?


aAre exemplified by clay and mica

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bAre poor electrical conductors due to lack of free electrons

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cNever exhibit polymorphism

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dAll A., B. and C.

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View Answer All A., B. and C.

Duralumin is an alloy of_________________?


aAluminium, copper and manganese

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bAluminium, nickel and silicon

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cAluminium and nickel

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dNone of these

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


aAbove the highest

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bAbove the lowest

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cBetween the first & second

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dBetween the second & third

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View Answer Above the lowest

DDT is shipped in_________________?


aStainless steel containers

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bPaper bags

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cFibre drums

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dEither B. or C.

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View Answer Either B. or C.

______________ is not a case hardening process?


aCarburising

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bNitriding

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cCyaniding

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dAnnealing

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View Answer Annealing

High degree of toughness is a must for__________________?


aHigh speed steel

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bShock resisting steel

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cCold work tool steel

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dNone of these

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View Answer Shock resisting steel

Which of the following is the easiest to bend ?


aSteel

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bStainless steel

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cCast iron

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dWrought iron

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View Answer Wrought iron

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


aThermoplastic materials

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bNickel

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cSteel or iron

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dNone of these

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View Answer Steel or iron

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