Write two uses of calcium carbonate.

Explanation

**Step-by-Step Text Solution:**

1. **Identify the Compound**: Calcium carbonate is represented by the chemical formula CaCO3. It is a widely used chemical compound found in various forms, such as chalk, limestone, and marble.

2. **First Use - Medicinal Industry**: One of the primary uses of calcium carbonate is in the medicinal industry. It is commonly used to manufacture antacid tablets. These tablets help alleviate issues such as heartburn, acid indigestion, and stomach upset by neutralizing excess stomach acid.

3. **Second Use - Pulp and Paper Industry**: Another significant use of calcium carbonate is in the pulp and paper industry. It serves as a filler and pigment, enhancing the quality of paper products. Calcium carbonate contributes to producing a whiter and higher-quality pigment compared to other minerals.

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