1.

In the manufacture of H‚ÇÉ PO‚ÇÑ (ortho), ; strong H‚ÇÇ SO‚ÇÑ leaching wet process as compared to electric furnace process$?

A. Uses lower grade phosphate rock
B. Requires lower capital investment in the plant
C. Produces lower purity acid
D. Is very costly
Answer» D. Is very costly


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