General Knowledge - General Science - Discussion

Discussion Forum : General Science - Elements and Metals (Q.No. 58)

General Science

58.

The main constituents of pearls are

calcium oxide and ammonium chloride

calcium carbonate and magnesium carbonate

aragonite and conchiolin

ammonium sulphate and sodium carbonate

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

13 comments Page 2 of 2.

Daniel said: 1 decade ago

Pearls are whitish substance of magnesium carbonate and magnesium carbonate.

Pruthi said: 1 decade ago

Natural pearls are nearly 100% calcium carbonate and conchiolin.

Praveen said: 1 decade ago

Pearls are hard..and white..and made by an insect(forgot name) which release Calcium carbonate

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