What is the formula of calamine?

What is the formula of calamine?
  1. $\mathrm{ZnCO}_{3}$
  2. $\mathrm{MgCO}_{3}, \mathrm{CaCO}_{3}$
  3. $\mathrm{Fe}_{2} \mathrm{O}_{3}$
  4. $\mathrm{FeCO}_{3}$

Solution

$\text { Calamine is an ore of zinc. It is zinc carbonate with the formula, } \mathrm{ZnCO}_{3} \text {. }$

Asked in: MHT CET 2020 (13 Oct Shift 2)

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