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Chemistry In Everyday Life

AP EAPCET 2024 - 21th May Evening Shift

MCQ+1 / -02024
The enamel present on teeth becomes much harder due to the conversion of $\left[3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot X\right.$ ] into [ $3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 Y$ ]. What are $X$ and $Y$ ?

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