MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following ions is the brown ring test useful for determining? |
| A. | NO<sub>2</sub><sup> </sup> |
| B. | NO<sub>2</sub><sup>+</sup> |
| C. | NO<sub>2</sub> |
| D. | NO<sub>3</sub><sup> </sup> |
| Answer» E. | |