Question

Describe briefly one biological and physical methods of conversion of nitrogen to forms like nitrates and nitrites.

Answer 1

biological process of conversion nitrogen into nitrates and nitrites is use of bacteria like blue green algae, anabena nostoc, rhizobium, kelbsilla etc.......n there are lot of physical methods u can search for anyone

Answer 2

There are two types of nitrogen fixation:

- Physical nitrogen fixation  

- Biological nitrogen fixation  

In physical nitrogen fixation, under the influence of lighting and thunder nitrogen and oxygen gas reacts with air to form nitric oxide which later on oxidized to form nitrogen peroxide.

When rain falls, this nitrogen peroxide forms nitric acid and then when it mixes with alkaline radical, it forms soluble nitrates and nitrites.

Biological means of nitrogen fixation takes place with the help of nitrogen fixing bacteria which are present in the roots of leguminous plants.