Cement is a mixture of________________?
Correct answer: B. clay lime stone and gypsum
- A. clay and clinker
- B. clay lime stone and gypsum
- C. lime stone and gypsum
- D. lime stone and clay
Explanation
In simplified descriptions, cement is made from calcareous material such as limestone, argillaceous material such as clay, and a small amount of gypsum. Gypsum is added after clinker formation to regulate setting, while limestone and clay provide the main oxides. Students may choose a because clinker is the principal cement component, but option a omits gypsum and clay as raw-material contributors.
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