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| Q. |
Sodium calcium silicate is called. |
| A. | Hard glass |
| B. | Borosilicate glass |
| C. | Soft glass |
| D. | Jena glass |
| Answer» C. Soft glass | |
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Explanation: Ordinary glass which is also known as soda glass or soft glass is a mixture of sodium silicate, Calcium silicate, and Silica. |
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