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Engineering Materials

Engineering Materials
Which of the following constituents of steels is softest and least strong?

Pearlite
Austenite
Ferrite
Cementite

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Engineering Materials
The steel widely used for motor car crankshafts is

Silicon steel
Nickel-chrome steel
Chrome steel
Nickel steel

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Engineering Materials
The machinability of steel is increased by

Phosphorous, lead and sulphur
Phosphorous and aluminium
Silicon and sulphur
Sulphur, graphite and aluminium

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Engineering Materials
Recrystallization temperature can be lowered by

Purification of metal
Working at lower temperature
Grain refinement
All of these

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Engineering Materials
White cast iron contains carbon in the form of

Cementite
Free carbon
White carbon
Graphite

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Engineering Materials
The portion of the blast furnace below its widest cross-section is called

Bosh
Throat
Stack
Hearth

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