The product obtained on treating \( \mathrm{KMnO}_{4} \) with very strong alkali in absence of a...

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The product obtained on treating \( \mathrm{KMnO}_{4} \) with very strong alkali in absence of any reducing agent is
(1) \( \mathrm{MnO}_{2} \)
(2) \( \mathrm{Mn}_{2} \mathrm{O}_{7} \)
(3) \( \mathrm{K}_{2} \mathrm{MnO}_{4} \)
(4) No reaction
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