21.Which of these ores is not an oxide? [A] Sphalerite [B] Haematite [C] Cuprite [D] Magnetite Show Answer

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Dileep Vishwakarma

2 years ago

Chalcocite is an important copper ore mineral with formula Cu2S . The metal here is a sulphide form that is copper (I) sulphide. Hence, this doesn't belong to oxide ore.

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