Question : Sodium Calcium Silicate is called________.
Option 1: hard glass
Option 2: borosilicate glass
Option 3: soft glass
Option 4: jena glass
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Correct Answer: soft glass
Solution : The correct option is soft glass.
Soft glass refers to soda-lime glass and is the most common type. It is used in daily objects such as windows, bottles, and glasses. The chemical formula of soda-lime glass is Na 2 O.CaO.6SiO 2 . It is a compound composed of several oxides, notably sodium silicate (Na 2 SiO 3 ), calcium silicate (CaSiO3), and silica (SiO 3 ).
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