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  1. Vulcanized rubber contains sulphur

    2. A.

     2%
    B.

     3-5%
    C.

     7-9%
    D.

     10-15%

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    Answer : Option B

    Explanation :

    A vulcanized flexible tyre rubber contains about 3 –5% of sulphur whereas hard rubber (ebonite) contains about 32% of sulphur. The stiffness of vulcanized rubber depends on the amount of sulphur added.

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