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2015-11-29T11:57:22+05:30

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Firstly, what does the indicator means...it means it show that the reaction is taking place by showing some changes (here it is colour) in the chemical reaction.
KMnO4 solution is dark purple colour , when it is being titrated, end point is reached when it's colour changes from dark purple to permanent pink. Thus KMnO4 is self indicator
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