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General Science - Synthetic Materials

  1. The type of glass used in making lenses and prisms is

    2. A.
    jena glass
    B.
    soft glass
    C.
    pyrex glass
    D.
    flint glass

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  2. Which one of the following is the petroleum wax?

    3. A.
    Paraffin wax
    B.
    Jonoba wax
    C.
    Carnauba wax
    D.
    Bees wax

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