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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)

Answer: A

Solution.

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

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