MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following compounds can be used to obtain free nitrogen? |
| A. | NaNO<sub>2</sub> |
| B. | HNO<sub>2</sub> |
| C. | HNO<sub>3</sub> |
| D. | Ba<sub>3</sub>N<sub>2</sub> |
| Answer» B. HNO<sub>2</sub> | |