WBCS.LIVE practice question

Which one among the following is the main ingredient in cement?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Gypsum
  2. Limestone
  3. Clay
  4. Ash

Correct answer and explanation

Correct answer: Limestone

Explanation: āœ… Correct Answer: B) Limestone šŸ“š Explanation: Limestone (CaCO3) is the primary raw material used in the manufacturing of Portland cement. It provides the necessary calcium oxide (lime) which acts as a binding agent. Clay is also added to provide silica and alumina.