JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank Compounds of Transitional Elements

  • question_answer
    By annealing, steel  [BHU 2004]

    A) Becomes soft

    B) Becomes liquid

    C) Becomes hard and brittle

    D) Is covered with a thin film of \[F{{e}_{3}}{{O}_{4}}\]

    Correct Answer: A

    Solution :

    When the quenched steel is heated to temperature below red hot and then allowed to cool slowly, it becomes soft. This process is known as annealing.


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