Element playing important role in nitrogen fixation is
A
Mn
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B
Mo
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C
Zn
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D
Cu
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Solution
The correct option is B Mo Mo is the element playing important role in nitrogen fixation as it is the element which is a constituent of nitrogenase and nitrate reductase which are the key enzymes of nitrogen fixation. Nitrogenase converts nitrogen to ammonia and nitrate reductase converts nitrates to nitrites.