JEE CHEMISTRY MCQ: REDOX REACTIONS

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Analyzing +4 | -1

Assertion (A):

3 {ClO}^{-} \rightarrow {ClO}_3^{-}+2 Cl^{-}

is an example of dissociation reaction.

Reason (R):

{ClO}^{-}

gets oxidised as well as reduced.

View answer and explanation

Correct option: D

Both (A) and (R) are false

Option D (Both (A) and (R) are false) is correct because the reaction is a disproportionation reaction, not a dissociation reaction, and ClO

{}^{-}

gets both oxidized and reduced.

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\mathrm{H}

2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2

\mathrm{HNO}_3

\mathrm{HNO}_3

\mathrm{MnO}_4^{-}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O} \longrightarrow 2 \mathrm{MnO}_2(\mathrm{aq})+\mathrm{BrO}_3^{-}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})

\mathrm{Br}

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