1.

A mixture when heated with conc. \[{{H}_{2}}S{{O}_{4}}\] with \[Mn{{O}_{2}}\] brown fumes are formed due to

A. \[B{{r}^{-}}\]
B. \[NO_{3}^{-}\]
C. \[C{{l}^{-}}\]
D. \[{{I}^{-}}\]
Answer» B. \[NO_{3}^{-}\]


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