Which of the following is/are oxide ore(s)?

Bauxite

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Cuprite

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Haematite

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All of these

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Solution

The correct option is B All of these
Chemical formula of Bauxite $\to A l_{2} O_{3} .2 H_{2} O$
Chemical formula of Cuprite $\to C u_{2} O$
Chemical formula of Haematite $\to F e_{2} O_{S}$
All of these are oxides.

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