What is limestone chemically known as?

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AFCAT 9th Aug 2024 (Shift 1 & 2) Memory Based Paper

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Answer 1

The correct answer is Calcium Carbonate.

Key Points

Limestone is primarily composed of the mineral calcite, which is chemically known as Calcium Carbonate (CaCO3).
Calcium Carbonate is a chemical compound with the formula CaCO3.
It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone).
Limestone is used extensively in construction, especially in the production of cement and concrete.
It is also used in the manufacture of glass, and as a raw material for the production of quicklime (calcium oxide).
Calcium Carbonate is also used in the pharmaceutical industry as a calcium supplement or antacid.

Additional Information

Sodium Carbonate
- Sodium Carbonate (Na2CO3) is also known as washing soda or soda ash.
- It is used in the manufacture of glass, detergents, and soaps.
- Sodium Carbonate is also used in the chemical industry as a pH regulator.
Potassium Carbonate
- Potassium Carbonate (K2CO3) is commonly known as potash.
- It is used in the production of glass, soap, and as a drying agent for some liquids.
- Potassium Carbonate is also used in the food industry as a buffering agent and in the production of cocoa and baked goods.
Magnesium Carbonate
- Magnesium Carbonate (MgCO3) is used as a drying agent and in fireproofing applications.
- It is also used in the sports industry as a chalk to improve grip in gymnastics, weightlifting, and rock climbing.
- Magnesium Carbonate is used in the pharmaceutical industry as an antacid and laxative.