Question

The main constituents of pearls are __________


a. calcium carbonate and magnesium carbonate


b. calcium oxide and ammonium chloride


c. aragonite and sodium carbonate


d. ammonium sulphate and sodium carbonate

Answer 1

नमस्ते मित्र!

हिन्दी दिवस की हार्दिक शुभकामनाएँ !
______________________________

The main constituent of pearls are :-

Option [A]

✒ Calcium Carbonate and Magnesium Carbonate.

______________________________

धन्यवाद !

☺☺☺

Answer 2

i think the answer is number 1