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  3. 7th Class
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7th Class Science Sample Paper Science Olympiad Model Test Paper-17

  • question_answer
    What is the usual name of magnet whose magnetism can be turned on or off as desired?

    A) Bar magnet

    B) Horseshoe magnet

    C) Cylindrical magnet

    D) Electromagnet

    E) None of these

    Correct Answer: D

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