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Which of the following is a form of calcium carbonate?

Which of the following is a form of calcium carbonate?

I. limestone
II. marble
III. chalk
Iv. egg-shells

A.

I only

B.

I, II and IV

C.

I and II only

D.

I, II, III, and IV

View answer & explanation

Correct answer is D

- Calcium trioxocarbonate (IV) occurs abundantly in earth's crust as limestone, chalk and marble

- Eggshell is made almost entirely of calcium carbonate (CaCO3) crystals.

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