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  1. Which of the following are the ingredients of gun metal?

    2. A.

     Iron, Zinc and Titanium
    B.

     Iron and Tin
    C.

     Iron, Brass and Tin
    D.

     Copper, Tin and Zinc

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    Answer : Option D

    Explanation :

    Modified gunmetal contains lead in addition to the zinc; it is typically composed of 86% copper, 9.5% tin, 2.5% lead, and 2% zinc. It is used for gears and bearings.

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