Identify the ore that does not contain iron.

  • A
    Limonite
  • B
    Siderite
  • C
    Carnallite
  • D
    Chalcopyrites

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The percentage of abundance of three elements $X, Y$ and $Z$ in the earth's crust are about $27.7$,$8.3$ and $46.0$ by mass respectively. $X, Y$ and $Z$ are

Cinnabar is an ore of

Which is not a halide ore?

The formula of Azurite is:

Match the following items in List-$I$ with their corresponding formulas in 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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