Question:medium

The form of phosphorus in rock phosphate

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Because of its apatite structure, rock phosphate is highly insoluble in water. It is only effective as a direct fertilizer in highly acidic soils ($\text{pH} < 5.5$) that help dissolve the mineral structure.
Updated On: Jul 10, 2026
  • $\text{Ca}(\text{H}_2\text{PO}_4)_2$
  • $\text{CaHPO}_4$
  • $\text{Ca}_3(\text{PO}_4)_2$
  • $3(\text{Ca}_3(\text{PO}_4)_2) \cdot \text{Ca}(\text{OH})_2$
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The Correct Option is D

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