P2O5 content in superphosphate is about _____________ percent?
Correct answer: B. 15-20
- A. 30-35
- B. 15-20
- C. 65-70
- D. 85-90
Explanation
Normal superphosphate typically contains about 16–20% available P2O5, so 15–20% is the matching range. The much higher ranges are associated with neither ordinary superphosphate nor its usual commercial analysis.
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