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  • The nitrogen molecules present in air can be converted into nitrates and nitrites by

The nitrogen molecules present in air can be converted into nitrates and nitrites by

(a) a biological process of nitrogen fixing bacteria present in soil
(b) a biological process of carbon fixing factor present in soil
(c) any of the industries manufacturing nitrogenous compounds
(d) the plants used as cereal crops in field

Answers (1)

The nitrogen fixation process converts nitrogen present in the atmosphere into nitrogen compounds. Nitrogen fixation can be done by non-biological and biological processes. Lightning is a non-biological process which does nitrogen fixation. Biologically, some bacteria in the soil do this nitrogen fixation.
Hence, the correct option is option A.

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