In the reaction $2 H_{2} O_{2} ⟶ 2 H_{2} O + O_{2}$ , the catalyst used is____________.

M n O_{2}

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M g O

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M n_{2} O_{3}

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F e

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Solution

The correct option is A $M n O_{2}$
In the preparation of oxygen by hydrogen peroxide, the catalyst used is manganese dioxide.

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