In which of the following reactions a brown coloured gas is evolved ? – InterviewSolution

1.	In which of the following reactions a brown coloured gas is evolved ?
Answer» `KBr (s) + " dil." H_(2)SO_(4) to` `NH_(4)NO_(2) overset(Delta)to` `NaNO_(3) UNDERSET(800^(@)C) overset(Delta)to` `AgNO_(3)(s)+conc. H_(2)SO_(4) to` Answer :D

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