deepak mahato


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Question { CDS, 36836 }

. The main constituents of pearl are

(a) Calcium carbonate and magnesium carbonate

(b) Aragonite and conchiolin

(c) Ammonium sulphate and sodium chloride

(d) Calcium oxide and ammonium chloride


Answer

a) calcium oxide and ammonium chloride

Is This Answer Correct ?    0 Yes 4 No