JEE Main 2019 Chemistry question
Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO and a gaseous product. MnO reacts with NaCl and concentrated HSO to give a pungent gas Z. X, Y and Z, respectively, are:
Answer: (A)
Solution
2KMnO → KMnO + MnO + O; MnO oxidises HCl (from NaCl + HSO) to Cl.