Question

Borosilicate glasses are used as laboratory wares because of:

• A. low thermal expansion
• B. high thermal expansion
• C. high refractive index
• D. low refractive index

Answer 1

Answer: (A)

low thermal expansion

Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glassesware known for having very low coefficients of thermal expansion $\left(3106{/}^{o}C\right)$ at $\left({20}^{o}C\right)$, making them resistant to thermal shock, more so than any other common glass.