Q176
Rock phosphate contains
A.
18 - 20% P2O5
B.
20 - 30% P2O5
AnswerC.
10 - 15% P2O5
D.
30 - 40% P2O5
Answer: Option B
Solution
Answer: Option B
Solution:
Rock phosphate contains 20 - 30% P2O5.Phosphate rock is the primary source of phosphorus (P) and the main raw material for phosphate fertilizers.
Phosphate ore is extracted from sedimentary deposits (85% of world production) and magmatic deposits. Phosphate ore grades range between 2% and 35% phosphorus pentoxide (P2O5).