Engineering Materials
Amorphous material is one

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

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Engineering Materials
The temperature required for full annealing in hypereutectoid steel is

30° C to 50° C above lower critical temperature
30° C to 50° C below upper critical temperature
30° C to 50° C above upper critical temperature
30° C to 50° C below lower critical temperature

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