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The one that is not a carbonate ore is : 

(1) malachite 

(2) bauxite 

(3) calamine 

(4) siderite 

1 Answer

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Best answer

Correct option (2) bauxite

Explanation:

Malachite = CuCO3. Cu(OH)2

Bauxite = Al2O3 . 2H2O or AlOx . (OH)3–2x (where D < x < 1)

Calamine = ZnCO3

Siderite = FeCO3

∴ is Bauxite option-2.

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