Calamine is a mineral,which is
- A$ZnCO_3$
- B$ZnS$
- C$ZnSO_4$
- D$ZnO$
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Which element exists in the free state mainly?
Easy
View SolutionWhich of the following formulas represents galena?
Among the following ores: Bauxite,Siderite,Cuprite,Calamine,Haematite,Kaolinite,Malachite,Magnetite,Sphalerite,Limonite,Cryolite,the number of principal ores of iron is $......$
Emery consists of
Easy
View SolutionMatch the following ores with their compositions:
$A$. Calamine $i$. $CuFeS_2$ $B$. Chalcopyrite $ii$. $ZnCO_3$ $C$. Bauxite $iii$. $Fe_2O_3$ $D$. Haematite $iv$. $Al_2O_3 \cdot 2H_2O$
| $A$. Calamine | $i$. $CuFeS_2$ |
| $B$. Chalcopyrite | $ii$. $ZnCO_3$ |
| $C$. Bauxite | $iii$. $Fe_2O_3$ |
| $D$. Haematite | $iv$. $Al_2O_3 \cdot 2H_2O$ |
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