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Fe³⁺ is reduced to Fe²⁺ by using

$H_{2}O_{2}$ in presence of NaOH

$Na_{2}O_{2}$ in water

$H_{2}O_{2}$ in presence of

$H_{2}SO_{4}$

$Na_{2}O_{2}$ in presence of

$H_{2}SO_{4}$

Option A,B

H₂O₂ is alkaline medium acts as a reducing agent, reduces Fe³⁺ to Fe²⁺. In an acidic medium, the same H₂O₂ oxidises Fe²⁺ to Fe³⁺

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