Question

Common glass is mainly a mixture of ___________

(a) Calcium silicate, potassium silicate and copper silicate

(b) Sodium silicate, iron silicate and calcium silicate

(c) Aluminium silicate, potassium silicate and iron silicate

(d) Magnesium silicate, potassium silicate and zinc silicate

This question was addressed to me by my college professor while I was bunking the class.

Query is from Glass in section Glass, Lime, Clay Products & Bricks of Construction & Building Materials

Answer 1

Correct choice is (b) Sodium silicate, iron silicate and calcium silicate

To explain I would say: Common glass is mainly a mixture of sodium silicate, iron silicate and calcium silicate. It is usually available in green, brown or yellow colour.