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JEE Main & Advanced Chemistry The Solid State / ठोस प्रावस्था Question Bank Topic Test - Solid State

  • question_answer
    A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because

    A) all the domains get oriented in the direction of magnetic field

    B) all the domains get oriented in the direction opposite to the direction of magnetic field

    C) domains get oriented randomly

    D) domains are not affected by magnetic field

    Correct Answer: A

    Solution :

    [a] In the presence of magnetic field, all the domains of a ferromagnetic substance get oriented in the direction of magnetic field. That's why it becomes a permanent magnet.


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