Question

Which is the first stable product of nitrogen fixation?

• A. N2
• B. NH3
• C. NH4+
• D. NO3–

Answer 1

Answer:

B. NH3

NH₃ is the first stable product of nitrogen fixation. N₂ is the form in which nitrogen naturally exists. NO₃ is the form of nitrogen taken up by the plants. NH₄⁺ is the toxic form of nitrogen which gets accumulated in plants.