Other questions in this quiz

2. What is limestone mainly made of?

  • Calcium carbonate
  • Water
  • Carbon dioxide

3. Which of these is limestone used for?

  • Building
  • Engineering

4. What is the chemical symbol for calcium oxide?

  • Ca2o
  • CaO
  • 2CaO

5. Which chemical equation shows what is produced from CaCO3 after heating?

  • Co2 -----> Cao + CaCo3
  • CaCO3 ---> Ca0 + CO2
  • CO2 -----> CaO + C2o

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