The compound which cannot act as both oxidising and reducing agent is

$S O_{2}$

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$M n O_{2}$

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$A l_{2} 0_{3}$

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CrO

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Solution

The correct option is C
$A l_{2} 0_{3}$

An oxidizing agent, or oxidant, gains electrons and is reduced in a chemical reaction.

A reducing agent, or reductant, loses electrons and is oxidized in a chemical reaction.

$A l_{2} 0_{3}$ cannot act as both oxidising and reducing agent. It is only a reducing agent, ie it undergoes oxidation very easily. This is because Aluminium wants to achieve a +3 oxidation state.

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Similar questions

The compound which could not act both as oxidising as well as reducing agent is

H_{2} S

S O_{2}

H N O_{3}

H N O_{2}

H_{2} O_{2}

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