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Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO 2 and gaseous product. mnO 2 reacts with NaCl and concentrated H 2 O 4 to give a pungent gas Z. X, Y and Z, respectively, are :

1. KMnO 4 , K 2 MnO 4 and Cl 2
2. K 2 MnO 4 , KMnO 4 and SO 2
3. K 3 MnO 4 , K 2 MnO 4 and Cl 2
4. K 2 MnO 4 , KMnO 4 and Cl 2

Correct answer: KMnO 4 , K 2 MnO 4 and Cl 2

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