Engineering Board Exam Reviewer · Chemistry · easy

The common name of calcium carbonate (CaCO₃) found in rocks is:

1. Quicklime
2. Slaked lime
3. Gypsum
4. Limestone

Answer

D. Limestone

Solution

Quicklime is CaO; slaked lime is Ca(OH)2; gypsum is CaSO₄·2H₂O.

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