Question

The nitrogen in the atmosphere can be converted into soluble usable nitrates by which of the following process?
I. Fertilizer production
II. Eutrophication
III. Nitrogen fixation
IV. Denitrification

• A. I and II
• B. I and III
• C. I and IV
• D. II and III
• E. II and IV

Answer 1

Answer: (B)

I and III

The nitrogen in the atmosphere can be converted into soluble usable nitrates by fertilizer production and nitrogen fixation.

Nitrogen fertilizer generated by Haber's process involves the production of fertilizers utilizing ammonia produced by the nitrogen derived from the air. Nitrogen fixation is a process by which nitrogen (N${}_2$) in the atmosphere is converted into ammonia (NH${}_3$) in the soil which is later converted into the nitrate for absorption.

So, the correct answer is option B.