Question

Ordinary glass is a mixture of:

• A. sodium silicate, calcium silicate
• B. sodium silicate, calcium silicate and silica
• C. sodium silicate and silica
• D. none of the above

Answer 1

The correct option is B sodium silicate, calcium silicate and silica

Ordinary glass is solid mixture of $silica\left(Si{O}_2\right),sodiumsilicate\left(N{a}_{2}Si{O}_3\right)andcalciumsilicate\left(CaSi{O}_3\right)$. Glass is a supercooled liquid hence; it has no definite crystal structure and melting point.Hence we can say a glass is a mixture, not a compound.

So option $B$ is correct