______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?
Correct answer: A. Fluorine
- A. Fluorine
- B. Calcium
- C. Phosphorous
- D. Sulphur
Explanation
Fluorine compounds in phosphate rock are the main pollutant concern because phosphate processing can release hydrogen fluoride and other fluorides. Calcium and phosphorus are major constituents, but they are not the primary air-pollution concern here.
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