NCERT Exercise 3.1 — Q15 - Metals and Non-metals
Question: A goldsmith dipped gold bangles in a solution that sparkled them like new but reduced their weight drastically. What was the solution?
Answer: 1. Gold is a noble metal that is extremely unreactive. 2. It does not react with oxygen, moisture, or single concentrated acids. 3. The solution used by the goldsmith is called Aqua Regia. 4. Aqua ...
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