Question

Name any two forms in which calcium carbonate is found in nature.

Answer 1

1. Calcium carbonate$\left({\mathrm{CaCO}}_3\right)$is compound commonly found in rocks as a mineral.
2. It is used as an antacid to relieve upset stomach, heartburn, and acid indigestion.
3. It is found in the earth's crust (About 4% of the earth's crust).
4. Calcium carbonate occurs in nature as limestone, marbles, chalk, and skeletons of corals.

Hence, limestone, and marbles are the two forms in which calcium carbonate is found in nature.