Question

The process of denitrification means the

• A. Reduction of NO${}_2$ to ammonia by the bacteria in the soil.
• B. Conversion of ammonia to amino acids.
• C. Conversion of ammonia and nitrates to gaseous nitrogen.
• D. Oxidation of ammonia to nitrate.

Answer 1

The correct option is C Conversion of ammonia and nitrates to gaseous nitrogen.

Some of the nitrates present in soil are reduced to ammonia and free nitrogen by anaerobic bacteria like Bacillus subtilis, Pseudomonas denitrificans, etc. The process of converting nitrates into nitrogen is called denitrification. Thus option C is the correct answer.