Question

Which one of the following reactions is an example for calcination process?

• A. $2 \, Ag+2 \, HCl+\left(\right.O\left.\right) \rightarrow 2 \, AgCl+H_{2}O$
• B. $2 \, Zn+O_{2} \rightarrow 2 \, ZnO$
• C. $2 \, ZnS+3 \, O_{2} \rightarrow 2 \, ZnO+2 \, SO_{2}$
• D. $MgCO_{3} \rightarrow MgO+CO_{2}$

Answer 1

Answer: (D)

The process of heating the concentrated ore in the absence of air is known as calcination. The carbonate ore gets decomposed to form oxide of metal on calcination.
$MgCO_{3} \rightarrow MgO+CO_{2}$