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Railways NTPC (Technical Ability) Materials Science Question Bank Materials Science

  • question_answer
    Which of the following generally decreases in the steel after quench-hardening
    1. Brittleness
    2. Percentage elongation
    3. Impact strength

    A) 1 and 2 only                 

    B) 2 and 3 only

    C) 1 and 3 only                 

    D) 1, 2 and 3

    Correct Answer: B

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