Fusion of limestone and ______________ produces high alumina cement?
Correct answer: B. Bauxite
- A. Sand
- B. Bauxite
- C. Quicklime
- D. Calcite
Explanation
High-alumina cement is made by fusing limestone with bauxite, which supplies the high alumina content. Sand, quicklime and calcite do not provide the required alumina-rich composition.
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