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

  • question_answer
    Carbide-tipped cutting, tools are manufactured by powder-metal technology processes and have a composition of:

    A) Zirconium-Tungsten (35%-65%)

    B) Tungsten carbide-cobalt (90%-10%)

    C) Aluminium oxide-silica (70%-30%)

    D) Nickel-chromium tungsten (30%-15%55%)

    Correct Answer: B

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