MnO_(2) is the most important oxide of manganese , MnO_(2) occurs natually as the black coloured mineral pyrolusite. It is an oxidising agent, and decomposes to Mn_(3)O_(4) on heating to 530^(@)C. It is used in the preparation of potassium permanaganate and in the productioon of Cl_(2) gas. Over half million tonnes per year of MnO_(2) is used in dry batteries. Q.When MnO_(2) is fused with KOH in the presence of air, the product formed is:

MnO_(2) is the most important oxide of manganese , MnO_(2) occurs natu

1.	MnO_(2) is the most important oxide of manganese , MnO_(2) occurs natually as the black coloured mineral pyrolusite. It is an oxidising agent, and decomposes to Mn_(3)O_(4) on heating to 530^(@)C. It is used in the preparation of potassium permanaganate and in the productioon of Cl_(2) gas. Over half million tonnes per year of MnO_(2) is used in dry batteries. Q.When MnO_(2) is fused with KOH in the presence of air, the product formed is:
Answer» PURPLE colour `KMnO_(4)` GREEN colour `K_(2)MnO_(4)` Colourless `MnO_(4)^(-)` Purple colour `K_()MnO_(4)` ANSWER :B