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Railways Sample Paper RRB (Group D) Sample Test Paper-13

  • question_answer
    The element used for vulcanizing rubber is

    A)  Sulphur

    B)  Bromine

    C)  Silicon 

    D)  Phosphorus

    Correct Answer: A

    Solution :

    [a] Vulcanization is a chemical process for converting natural rubber or related polymers into more durable materials by the addition of sulfur.


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