1.

A brown ring is formed in the ring test for NO_(3)^(-) ion. It is due to the formation of

Answer» <html><body><p>`[Fe(H_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)O)_(5)(NO)]^(2+)`<br/>`FeSO_(4).NO_(2)`<br/>`[Fe(H_(2)O)_(4)(NO)_(2)]^(2+)`<br/>`FeSO_(4),HNIO_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)`</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :A</body></html>


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