Fusion temperature of pure silica (SiO2) is _______________ °C?
Correct answer: B. 1715
- A. 1350
- B. 1715
- C. 2570
- D. 2800
Explanation
Pure silica melts at approximately 1715°C, although its crystal transformations occur at much lower temperatures. The higher values in the options refer to other high-temperature materials or are not the fusion point of SiO₂.
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