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Engineering Materials

Engineering Materials
The ability of a material to resist softening at high temperature is known as

Fatigue
Hot hardness
Creep
Hot tempering

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Engineering Materials
Chilled cast iron has

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

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Engineering Materials
The tensile strength of wrought iron is maximum

Perpendicular to lines of slag distribution
Uniform in all directions
None of these
Along the lines of slag distribution

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Engineering Materials
Solder is an alloy consisting of

Lead and zinc
Tin and lead
Tin, antimony, copper
Tin and copper

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Engineering Materials
A material is known as allotropic or polymorphic if it

Exists in several crystal forms at different temperatures
Has its atoms distributed in a random pattern
Has a fixed structure under all conditions
Responds to heat treatment

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Engineering Materials
The ratio of the volume occupied by the atoms to the total volume of the unit cell is called

None of these
Space lattice
Atomic packing factor
Coordination number

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