Sand and ______________ is fused at 1300°C, to produce sodium silicate ?
Correct answer: B. Soda ash
- A. Limestone
- B. Soda ash
- C. Coke
- D. Sodium sulphate
Explanation
Sodium silicate is produced by fusing silica in sand with sodium carbonate, commonly called soda ash, at high temperature. Limestone, coke, and sodium sulphate do not provide the required usual sodium source in this reaction.
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