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

  • question_answer
    Match List-I with List-II and select the correct answer using the codes given below the lists:
    List-I (Material) List-II (Applications)
    A. Tungsten carbide   1. Abrasive wheels
    B. Silicon nitride     2. Heating elements
    C. Aluminium oxide  3. Pipes for conveying liquid metals
    D. Silicon carbide        4. Drawing dies
    Codes:

    A) A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2

    B) A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1

    C) A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1

    D) A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2

    Correct Answer: D


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