Fusion temperature of pure silica (SiO2) is _______________ °C?
(A) 1350
(B) 1715
(C) 2570
(D) 2800
Fusion temperature of pure silica (SiO2) is _______________ °C?
(A) 1350
(B) 1715
(C) 2570
(D) 2800
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