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Engineering Materials

Engineering Materials
In malleable iron, carbon is present in the form of

Flakes
Cementite
Nodular aggregates of graphite
Free carbon

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Engineering Materials
Cast iron is manufactured in

Bessemer converter
Open hearth furnace
Blast furnace
Cupola

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Engineering Materials
Vanadium in high speed steels

Provides high hot hardness
Forms very hard carbides and thus increases wear resistance
Promotes retention of austenite
Promotes decarburisation

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Engineering Materials
Basic solution is one which has pH value

Greater than 7
pH value has nothing to do with basic solution
Less than 7
Equal to 7

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Engineering Materials
Machining properties of steel are improved by adding

Sulphur, lead, phosphorous
Silicon, aluminium, titanium
Chromium, nickel
Vanadium, aluminium

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Engineering Materials
Induction hardening is basically a

Core hardening process
None of these
Surface hardening process
Carburising process

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