Given below are two statements : Statement (I) : Fusion of MnO 2 with KOH and an oxidising agent gives dark green K 2 MnO 4 . Statement (II) : M n 2 + can directly be converted to M n O 4 − us

Question

Given below are two statements :

Statement (I) : Fusion of $MnO_{2}$ with KOH and an oxidising agent gives dark green $K_{2} MnO_{4}$ .

Statement (II) : $M n^{2 +}$ can directly be converted to $M n O_{4}^{-}$ using $N a B i O_{3}$ in basic medium.

In the light of the above statements, choose the correct answer from the options given below.

TestHub · Accepted Answer

Statement (I) is true: MnO 2 ​ reacts with KOH and an oxidizing agent (like KNO 3 ​ or air) to form dark green K 2 ​ MnO 4 ​ (potassium manganate). 2 MnO 2 ​ + 4 KOH + O 2 ​ → 2 K 2 ​ MnO 4 ​ + 2 H 2 ​ O Statement (II) is False: M n 2 + can directly be converted to M n O 4 − ​ using N a B i O 3 ​ in ACIDIC medium.

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Options:

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JEE Main 2028 (Class 11)