Determination of alumina (AI2O3) in iron ore is based on the...

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Determination of alumina (AI₂O₃) in iron ore is based on the selective formation of AIPO₄ from its acidic solution (with cone, HCl) by the addition of

A. phosphoric acid

B. calcium phosphate

C. barium phosphate

D. sodium or ammonium phosphate

Answer: Option D

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