A. Calcium oxide &Ammonium Chloride
B. Calcium Carbonate &Megnesium Carbonate
C. Aragonite & Conchiolin
D. None of these
Submitted by: Fahad Mehsud
A. Calcium oxide &Ammonium Chloride
B. Calcium Carbonate &Megnesium Carbonate
C. Aragonite & Conchiolin
D. None of these
Submitted by: Fahad Mehsud
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