A) Potassium permanganate
B) Potassium iodide
C) \[\text{FeS}{{\text{O}}_{\text{4}}}\]
D) Potassium ferrocyanide
Correct Answer: A
Solution :
Hydrogen peroxide reduced potassium permanganate in acidic medium as : \[\underset{\text{Permanganate}\,\text{ion}}{\mathop{2MnO_{4}^{-}}}\,+\underset{(aicdic\,medium)}{\mathop{6{{H}^{+}}}}\,+\underset{\text{Hydrogen}\,\text{peroxide}}{\mathop{5{{H}_{2}}{{O}_{2}}}}\,\] \[\xrightarrow{{}}2M{{n}^{2+}}+8{{H}_{2}}O+5{{O}_{2}}\]
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