Q. Sodium calcium silicate is called:
Answer: Soft glass
Notes: Ordinary glass which is also known as soda glass or soft glass is a mixture of sodium silicate (Na2SiO3), calcium silicate (CaSiO3), and silica (SiO2), and its chemical composition is normally represented as Na2SiO3.CaSiO3.4SiO2 or Na2O.CaO.6SiO2. It is sued for making bottles, windows panes. etc.

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