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The reaction CaCO₃ → CaO + CO₂ requires:

The reaction CaCO₃ → CaO + CO₂ requires:
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Adding water
  • B Reducing pressure
  • C Heating strongly
  • D Cooling rapidly
Correct Answer: Option C
Explanation:
Calcium carbonate does not break down easily at room temperature. Strong heating is needed to decompose it into calcium oxide and carbon dioxide.

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