Engineering Materials
Amorphous material is one

Which emits fumes on melting
Which is not attacked by phosphorous
In which atoms align themselves in a geometric pattern upon solidification
In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid

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Engineering Materials
Stress relaxation is the phenomenon

In which stress remains constant on increasing load
Stress reduces on increasing load
In which parts are not loaded
In which deformation tends to loosen the joint and produces a stress reduced

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