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Engineering Materials

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

Flakes
Nodular aggregates of graphite
Cementite
Free carbon

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Engineering Materials
An eutectoid steel consists of

Wholly pearlite
Pearlite and cementite
Wholly austenite
Pearlite and ferrite

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Engineering Materials
The hardness and tensile strength in austenitic stainless steel can be increased by

Full annealing
Martempering
Hardening and cold working
Normalizing

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Engineering Materials
The molecules in a solid move

In a random manner
In a haphazard way
In circular motion
Back and forth like tiny pendulums

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Engineering Materials
Corundum contains more than 95%

Steel
SiO2
MgO
Al2O3

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Engineering Materials
Silicon when added to copper improves

Machinability
Strength and ductility
Hardness
Hardness and strength

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