The annealing temperature for ordinary glass is
A. 200 °C to 350 °C
B. 100 °C to 250 °C
C. 500 °C to 650 °C
D. 800 °C to 950 °C
Answer:C
The annealing temperature for ordinary glass is
A. 200 °C to 350 °C B. 100 °C to 250 °C C. 500 °C to 650 °C D. 800 °C to 950 °C