Show Para
This section contains 02 paragraph each describing theory, experiment, data etc. Four questions relate to the paragraph. Each question of a paragraph has Only One correct answer among the four choices ( A ) , ( B ) , ( C ) and ( D )
M n O 2 is the most important oxide of manganese. M n O 2 occurs naturally as the black coloured mineral pyrolusite. It is an oxidizing agent and decomposes to M n 3 O 4 on heating to 530 ∘ C . It is used in the preparation of potassium permanganate and in the production of C l 2 gas. Over half a million tons per year of M n O 2 is used in dry batteries.
Paragraph for Question Nos. 33 and 34
© examsnet.com
Question : 34
Total: 54
Go to Question: