Which of the following is a form of calcium carbonate?

I. limestone

II. marble

III. chalk

Iv. egg-shells

  • A limestone
  • B I only
  • C I, II and IV
  • D I and II only
  • E I, II, III, and IV
jamb 2021chemistry

The correct answer is D. I and II only

- 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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