To make coloured glasses, small quantities of oxides of metals which form coloured silicates are...
CHEMISTRY
WAEC 1990
To make coloured glasses, small quantities of oxides of metals which form coloured silicates are often added to the reaction mixture consisting of Na2CO3 and SiO2. Such a metals is a?.
- A. pottasium
- B. barium
- C. zinc
- D. copper
Correct Answer: D. copper
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