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Q)

Which of the following is not the ore of zinc ?

$\begin {array} {1 1} (A)\;\text{Sphalerite} & \quad (B)\;\text{Cassiterite} \\ (C)\;\text{Calamine} & \quad (D)\;\text{Zincite} \end {array}$

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A)
minerals for zinc include smithsonite (zinc carbonate), hemimorphite (zinc silicate), wurtzite (another zinc sulfide), and sometimes hydrozincite (basic zinc carbonate)
Answer : Cassiterite
Cassiterite in $\text{SnO}_2$
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