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Question

Which of the following is not an oxide ore?

A
Corundum
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B
Zincite
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C
Calamine
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D
Chromite
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Solution

The correct option is C Calamine
Corundum - Al2O3,, Zincite - ZnO
Calmine - ZnCO3, Chromite - Cr2O3.FeO
Calamine is an carbonate ore.

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