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1. |
In the manufacture of orthophosphoric acid by strong H₂SO₄ leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable |
A. | CaSO₄ .½H₂O and CaSO₄ crystals |
B. | Pyrophosphoric acid |
C. | Metaphosphoric acid |
D. | All of the above |
Answer» B. Pyrophosphoric acid | |