Question

1 What are the main constituents of pearls?
a) Calcium carbonate and magnesium carbonate.
b) Aragonite and conchiolin.
c) Ammonium sulphate and sodium carbonate.
d) Calcium oxide and ammonium chloride.

Answer 1

⛦Hᴇʀᴇ Is Yoᴜʀ Aɴsᴡᴇʀ⚑
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▶What are the main constituents of pearls?

➙ Calcium carbonate and magnesium carbonate

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Answer 2

Option A is

your correct answer........

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