Question

Glass is a transparent substance obtained by heating white sand with metal oxides or carbonates. It is a mixture of:

• A. sulphates
• B. phosphates
• C. chlorides
• D. silicates

Answer 1

The correct option is D silicates

Of the many silica-based glasses that exist, ordinary glazing and container glass is formed from a specific type called soda-lime glass, composed of approximately $75\%$ silicon dioxide $Si{O}_2$, sodium oxide $N{a}_{2}O$ from sodium carbonate $N{a}_{2}C{O}_3$, calcium oxide $\left(CaO\right)$, also called lime, and several minor additives.

Hence,option D is correct answer.