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(B) The chemical formulas for the ores are as follows:$1$. Calamine is $ZnCO_{3}$ and siderite is $FeCO_{3}$ (both are carbonates).$2$. Argentite is $

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Argentite and cuprite are oxides

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(B) The chemical formulas for the ores are as follows:$1$. Calamine is $ZnCO_{3}$ and siderite is $FeCO_{3}$ (both are carbonates).$2$. Argentite is $Ag_{2}S$ (sulphide) and cuprite is $Cu_{2}O$ (oxide). Thus,the statement that both are oxides is incorrect.$3$. Zinc blende is $ZnS$ and iron pyrites is $FeS_{2}$ (both are sulphides).$4$. Malachite is $CuCO_{3} \cdot Cu(OH)_{2}$ and azurite is $Cu_{3}(CO_{3})_{2}(OH)_{2}$ (both are copper ores).Therefore,the incorrect statement is $B$.

Among the following statements,the incorrect one is:

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Which one of the following statements is incorrect?

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