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Introduction

Role of KMn...

Question

Role of $K M n O_{4}$ in the given titration can be described as

Oxidising agent

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Reducing agent

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Indicator

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Oxidising agent and indicator

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Solution

The correct option is A Oxidising agent
The oxalic acid acts as a reducing agent, and the KMnO4 acts as an oxidizing agent, $K M n O_{4}$ acts as an indicator of where the permanganate ions are a deep purple colour. In this redox titration, $M n O_{4}^{-}$ is reduced to colourless manganous ions $(M n^{2 +})$ in the acidic medium.

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