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| Q. |
Nitric acid does not react with - |
| A. | Gold |
| B. | Copper |
| C. | Zinc |
| D. | Iron |
| Answer» A. Gold | |
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Explanation: Concentrated nitric acid is a very strong oxidator capable of reacting with the noble metals such as copper or silver. Some precious metals, such as pure gold and platinum- group metals do not react with nitric acid. However, pure gold does react with aqua regia, a mixture of concentrated nitric acid and hydrochloric acid. |
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