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  1. Quartz is

    2. A.
    stable form of silica upto 870°C.
    B.
    converted to tridymite on firing between 870 to 1470°C.
    C.
    transformed to crystoballite on heating above 1470°C.
    D.
    all (a), (b) and (c).

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    Answer : Option D

    Explanation :

    No answer description available for this question.

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