The main constituents of Pearl are ? – McqOptions

MCQOPTIONS

1.	The main constituents of Pearl are ?
A.	Ammonium Sulphate, Sodium Carbonate
B.	Argonite , Chonchiolin
C.	Calcium oxide, Ammonium Chloride
D.	Calcium Carbonate, Magnesium Carbonate
Answer» E.

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