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NEETChemistryd and f Block Elements

When an oxide of manganese (A) is fused with KOH in the presence of an oxidizing agent and dissolved in water, it gives a dark green solution of compound (B). Compound (B) disproportionates in neutral or acidic solution to give purple compound (C). An alkaline solution of compound (C) oxidizes potassium iodide solution to a compound (D) and compound (A) is also formed. Identify compounds A to D and also explain the r

Options

  1. AA Mn 2 O 7 , B Potassium permanganate (KMnO 4 ), C Manganate ion (MnO 4 2- ), D Manganese dioxide (MnO 2 )
  2. BA Manganese(IV) oxide (MnO 2 ), B (K 2 MnO 4 ), C (KMnO 4 ), D (KIO 3 )
  3. CA Manganese(III) oxide (Mn 2 O 3 ), B Potassium permanganate (KMnO 4 ), C Permanganate ion (MnO 4 - ), D Manga
  4. DA Manganese(II) oxide (MnO), B Potassium permanganate (KMnO 4 ), C Permanganate ion (MnO 4 - ), D Manganese di

Correct answer

B. A Manganese(IV) oxide (MnO 2 ), B (K 2 MnO 4 ), C (KMnO 4 ), D (KIO 3 )

Step-by-step solution

Correct Option is : (B) A Manganese(IV) oxide (MnO 2 ), B (K 2 MnO 4 ), C (KMnO 4 ), D (KIO 3 )

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