Physics
At the Curie temperature, the ferromagnetic materials get converted into

None of the others
Non-magnetic materials
Paramagnetic materials
Diamagnetic materials

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Physics
An integrated circuit is more advantages than a coventional circuit because

If a part of the integrated circuit fails the entire circuit is simply replaced
They make the electric equipments more reliable and easier for servicing
All listed here
A faulty part of a conventional circuit may be difficult to locate and repair

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