Which mineral does not contain $Al$?
- ACryolite
- BMica
- CFeldspar
- DFluorspar
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Which of the following is an ore of magnesium?
Easy
View SolutionWhich among the following is a mineral of sulphur?
Indicate the mineral from which copper is manufactured.
Medium
View SolutionMetals are usually not found as nitrates in their ores. Out of the following two ($I$ and $II$) reasons,which is/are true for the above observation?
$I.$ Metal nitrates are highly unstable.
$II.$ Metal nitrates are highly soluble in water.
$I.$ Metal nitrates are highly unstable.
$II.$ Metal nitrates are highly soluble in water.
MediumNEET 2015
View SolutionMatch the following minerals in List-$I$ with their chemical formulas in List-$II$.
List-$I$ List-$II$ $(A)$ Feldspar $(I)$ $[Ag_3SbS_3]$ $(B)$ Asbestos $(II)$ $Al_2O_3 \cdot H_2O$ $(C)$ Pyrargyrite $(III)$ $MgSO_4 \cdot H_2O$ $(D)$ Diaspore $(IV)$ $KAlSi_3O_8$ $(V)$ $CaMg_3(SiO_3)_4$
| List-$I$ | List-$II$ |
|---|---|
| $(A)$ Feldspar | $(I)$ $[Ag_3SbS_3]$ |
| $(B)$ Asbestos | $(II)$ $Al_2O_3 \cdot H_2O$ |
| $(C)$ Pyrargyrite | $(III)$ $MgSO_4 \cdot H_2O$ |
| $(D)$ Diaspore | $(IV)$ $KAlSi_3O_8$ |
| $(V)$ $CaMg_3(SiO_3)_4$ |
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