Potassium manganate (K₂MnO₄) is formed when(a) chlorine is passed into aqueous KMnO₄ solution(b) manganese dioxide is fused with potassium hydroxide in air(c) formaldehyde reacts with potassium permanganate in presence of a strong alkali(d) potassium permanganate reacts with conc. sulphuric acid
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Right answer is (b) .
Because,when Mangnese Oxide is fused with Potassium Hydroxide in air. Following reaction would take place :
2MnO₂ + 4KOH + O₂ → 2K₂MnO₄ + 2H₂O
Because,when Mangnese Oxide is fused with Potassium Hydroxide in air. Following reaction would take place :
2MnO₂ + 4KOH + O₂ → 2K₂MnO₄ + 2H₂O
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