Question

What are the raw materials used in manufacturing cement?

• A. Limestone
• B. Clay
• C. Iron
• D. All of these

Answer 1

Answer: (A), (B)

The correct options are
A

Limestone

B

Clay

Limestone and clay are the raw materials that are used in manufacturing cement. When they are strongly heated, they get fused together and form cement clinker. This clinker is then mixed with $2-3$ by weight with gypsum to form cement.