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प्रश्न
Which are the main ingredients of glass?
संक्षेप में उत्तर
उत्तर
Main ingredients of glass are as follows:
- Sand or Silica
- Sodium Carbonate
- Lime or Calcium Oxide
- Other Additives
- Lead glass: mixture of sand, soda, limestone and lead oxide
- Silica glass: using silica only
- Borosilicate: mixture of sand, soda, boric acid, aluminium oxide
- Alkali silicate glass: mixture of sand, soda
- Optical glass: mixture of sand, soda, limestone, barium oxide and boron
- Boron – this changes the thermal and electrical properties of the glass and is used to make Pyrex glassware which can withstand extremes of heat and cold.
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