

MCQOPTIONS
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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. \[NO_{3}^{-}\] | |