Question

Nitrogen is present in the environment as

(a) Ammonium ion (b) Nitrite ion (c) Nitrate ion (d) Nitrous oxide

• A. a, b, c, d
• B. a, b, c
• C. b, c, d
• D. None of these

Answer 1

Answer: (A)

a, b, c, d

Nitrogen is present in the environment in a wide variety of chemical forms including organic Nitrogen, ammonium $\left(N{H}_4^{+}\right)$, nitrite, nitrate, nitrous oxide, nitric oxide etc.