Question

Which industry uses limestone as raw material?
1. Planstic
2. Automobile
3. Utensils
4. Cement

Answer 1

Correct Answer - Option 4 : Cement

The correct answer is Cement.

• Limestone is a form of calcium carbonate which is used extensively for the manufacture of cement.
  • Cement is manufactured through a closely controlled chemical combination of calcium, silicon, aluminium, iron and other ingredients.
  • Crushed limestone is often the main raw ingredient in the manufacture of portland cement.
• CaCO₃ is the chemical formula of Calcium carbonate.
• Limestone is a carbonate sedimentary rock composed primarily of calcium carbonate (CaCO3).
• Limestone released carbon dioxide gas while heating.

• Limestone is used as:
  • Building material.
  • Essential component cement industry.
  • Aggregate for the base of roads.
  • Filler in products such as toothpaste or paints.