Sea shells contain mainly CaCO 3. Calcium oxide can be prepared from sea shells by

Sea shells contain mainly CaCO ₃. Calcium oxide can be prepared from sea shells by

Answer Details

Calcium oxide (CaO) can be prepared from sea shells which mainly contain calcium carbonate (CaCO₃) by heating at a high temperature. This process is called thermal decomposition, where heat is applied to the sea shells causing the CaCO₃ to break down into its constituent elements, calcium oxide (CaO) and carbon dioxide (CO₂). The reaction can be represented as: CaCO₃ → CaO + CO₂ Therefore, heating the sea shells at a high temperature will yield calcium oxide (CaO).