Question

11. In which of the following changes, the nitrogen atom is reduced.
A. N2 to NO B. N2 to NO2 C. N2 to NH3 D. N2 to HNO3​

Answer 1

Answer:

Just as photosynthesis or chemosynthesis must reduce carbon dioxide in the atmosphere before it can be used in biological reactions, so must biological nitrogen change from elemental N 2 to a ‐3 level, as in ammonia, NH 3.