McqMate
| Q. |
The chemical name or Quartz is – |
| A. | Calcium oxide |
| B. | Calcium phosphate |
| C. | Sodium phosphate |
| D. | Sodium silicate |
| Answer» D. Sodium silicate | |
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Explanation: Quartz is a compound of one part silicon and two parts of oxygen, silicon dioxide, SiO2. Quartz is the most abundant silica mineral. It is used in a number of industries, the important being glass, foundry, sodium silicate, silicon alloys, etc. The various grades of sodium silicate are characterized by their SiO2:Na2O weight ratio. |
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