Question

In the above reaction, a and b are
$2NH_{3} + 3O_{2}$ → a + $2NO_{2} + O_{2}$ → b → $2NO_{3}$

• A. Thiobacillus and Nitrococcus
• B. Nitrosomonas and Nitrobacter
• C. Nitrococcus and Nitrosomonas
• D. Nitrobacter and Nitrosomonas

Hint:

Nitrosomonas = $NH_{3}$ to $NO{2}$, Nitrobacter = $NO_{2}$ to $NO_{3}$.

Answer 1

The Correct Option is B

In the nitrification process, Nitrosomonas converts ammonia $(NH_{3})$ to nitrite $(NO_{2})$, and Nitrobacter then converts nitrite to nitrate $(NO_{3})$. This is a sequential oxidation process essential in the nitrogen cycle.