Phosphatic fertiliser is graded based on its _____________ content?
Correct answer: C. P2O5
- A. P2O3
- B. PCl5
- C. P2O5
- D. H3PO4
Explanation
Phosphate fertilizers are graded by their available phosphorus expressed conventionally as equivalent P₂O₅. The actual fertilizer may contain different phosphate compounds, but P₂O₅ is the standard grading basis.
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