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    Question

    Curie point is the temperature at which

    A Matter becomes radioactive Correct Answer Incorrect Answer
    B A metal loses magnetic properties Correct Answer Incorrect Answer
    C A metal loses conductivity Correct Answer Incorrect Answer
    D Transmutation of metal occurs Correct Answer Incorrect Answer

    Solution

    In physics and materials science, the Curie temperature (TO, or Curie point, is the temperature at which a ferromagnetic or a ferromagnetic material becomes paramagnetic on heating; the effect is reversible. A magnet will lose its magnetism if heated above the Curie temperature. The term is also used in piezoelectric materials to refer to the temperature at which spontaneous polarization is lost on heating.

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