1.

Which of the following reactions involve both oxidation and reduction ?

Answer»

`NaBr+HClrarrNaCl + HBr`
`HBr + AgNO_(3) rarr AgBr+ HNO_(3)`
`H_(2) + Br_(2) rarr 2HBR`
`2NAOH + H_(2)SO_(4) rarr Na_(2) SO_(4) + 2H_(2)O`

Answer :C


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