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SSC PYQTier 1 2025

SSC CGL – Combined Graduate Level Examination · Question 45

The process of ‘Nitrification’ in the nitrogen cycle involves:

  1. Conversion of nitrogen gas to ammonia
  2. Conversion of ammonia to nitrites and then nitrates
  3. Release of nitrogen back into the atmosphere
  4. Absorption of nitrogen by animals
Show answer & explanation

Answer: (B) Conversion of ammonia to nitrites and then nitrates

Explanation

Nitrifying bacteria oxidise ammonia to nitrites (Nitrosomonas) and then to nitrates (Nitrobacter).