- Statement I: \(\text{Ca(OH)}_2\) is used in whitewash. This is true as calcium hydroxide is commonly used for whitewashing walls.
- Statement II: \(\text{CaCO}_3\) is used as a mild abrasive in toothpaste. This is also true, as calcium carbonate is a mild abrasive used in toothpaste.
Thus, both statements are correct.