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Engineering Materials

Engineering Materials
The crystal structure of brass is

C.C.
F.C.C.
H.C.P.
Orthorhombic crystalline structure

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Engineering Materials
Iron is

Ferroelectric
Ferromagnetic
Dielectric
Paramagnetic

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Engineering Materials
For the allotropic forms of iron, the points of arrest are

The points of discontinuity
Constant for all metals
The points where no further change occurs
The points where there is no further flow of metal

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Engineering Materials
Depth of hardness of steel is increased by addition of

Nickel
Tungsten
Chromium
Vanadium

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Engineering Materials
Gun metal contains

70% copper and 30% zinc
85 - 92% copper and rest tin with little lead and nickel
70 - 78% copper and rest tin
90% copper and 10% tin

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Engineering Materials
Chilled cast iron has

Graphite as its basic constituent of composition
A very high percentage of graphite
No graphite
A low percentage of graphite

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