Special features of borate glass is that it is_________________?
Correct answer: A. Heat resistant
- A. Heat resistant
- B. Low melting
- C. Used to prepare chemical garden
- D. Green in colour
Explanation
Borate and borosilicate glasses contain boron oxide, which produces a strong, chemically resistant network with a low coefficient of expansion. Therefore, they tolerate sudden temperature changes and are heat resistant. The likely alternative is low melting, but their important special feature is thermal resistance, not an unusually low melting point.
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Group IV, or Group 14, chemistry covers the trends from carbon and silicon to tin and lead, including their reactions with oxygen, halogens, water, acids and alkalis. It also examines the structures and properties of their oxides and chlorides, oxidation states, and the inert pair effect, rather than treating all members as equally metallic.
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