MCQ
Calcium oxide is prepared by heating :
- A$\ce{CaCO_3}$ in Castner$-$Kellner cell.
- ✓$\ce{CaCO_3}$ in rotary kiln.
- C$\ce{Ca(HCO_3)_2}$ in rotary kiln.
- D$\ce{Ca(HCO_3)_2}$ in Castner$-$Kellner cell.
✓
Answer
Correct option: B.
$\ce{CaCO_3}$ in rotary kiln.
Calcium oxide is prepared on a commercial scale by heating $\ce{CaCO_3}$ in a rotary kiln at $1070$ to $1270K.$
$\text{CaCO}_3\xrightarrow[1070-1270^\circ\text{C}]{ \ \ \ \ \text{Heat} \ \ \ \ }\text{CaO}+\text{CO}_2$
$\text{CaCO}_3\xrightarrow[1070-1270^\circ\text{C}]{ \ \ \ \ \text{Heat} \ \ \ \ }\text{CaO}+\text{CO}_2$
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