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In the chemical change \(aN{2}H{4}+bBrO{...

In the chemical change \(aN_{2}H_{4}+bBrO_{3}^{-}\rightarrow aN_{2}+bBr^{-}+6H_{2}O\)
answer the following questions.
The species acting as oxidant and reductant respectively are
(A) \(BrO_{3}^{-},N_{2}H_{4}\)
(B) \(N_{2}H_{4},BrO_{3}^{-}\)
(C) \(N_{2},BrO_{3}^{-}\)
(D) \(Br^{-},N_{2}H_{4}\)

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