A) \[N{{a}_{2}}O.\text{ }CaO\text{ }.\text{ }6Si{{O}_{3}}\]
B) \[N{{a}_{2}}\text{O }.\text{ }A{{l}_{2}}{{O}_{3}}\text{ }.\text{ }Si{{O}_{2}}\]
C) \[CaO\text{ }.\text{ }A{{l}_{2}}{{O}_{3}}\text{ }.\text{ }Si{{O}_{2}}\]
D) \[N{{a}_{2}}\text{O }.\text{ }CaO\text{ }.\text{ }6Si{{O}_{2}}\]
Correct Answer: D
Solution :
The simplest glass is soda glass which is also called soft glass. Glass is super-cooled liquid mixture. The composition of soft glass is\[N{{a}_{2}}\text{O}.CaO.6Si{{O}_{2}}\].
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