With increase in the alumina content in firebricks, its fusion point (refractoriness) ?
Correct answer: A. Increases
- A. Increases
- B. Remains unchanged
- C. Decreases linearly
- D. Decreases
Explanation
Alumina has a very high melting point and increases the high-temperature stability of firebricks. Thus, increasing alumina content generally increases refractoriness.
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