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How many of the following are oxide ores...

How many of the following are oxide ores. Calamine, Cuprite, Zincite, Chalcocite, Haematite, Bauxite, Magnetite, Caesiterite.

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The correct Answer is:
6
Calamine `-ZnCO_(3)` (Carbonate ore)
Cuprite `-Cu_(2)O` (Oxide ore)
Zincite `-ZnO` (Oxide ore)
Chalcocite `-Cu_(2)S` (Copper glance) (Sulphide ore)
Haematite `-Fe_(2)O_(3)` (Oxide ore)
Bauxite `-Al_(2)O_(3),2H_(2)O` (Oxide ore)Cassiterite `-SnO_(2)` (Tin stone ) (Oxide ore)
Magnetite -`Fe_(2)O_(4)` (Oxide ore)
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