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Occurrence of metals - class-XII
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Pyrolusite is:
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A
an oxide ore of $Mn$
💡 Explanation:
Out of many minerals in which a metal may be found, only a few are viable to be used as source of that metal. Such minerals are known as ores.
Not all elements exists in pure states. Some elements exist in combined states.Among them the viable ones are there ores and the pure metal is obtained after undergoing various metallurgical processes.
Pyrolusite-($MnO _2$) is an oxide ore of Manganese.