__________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant.
Question: __________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant.
[A].
Calcium 
Fluorine 
Phosphorous 
Sulphur 
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
