How much do you know about slaked lime and white washing walls?
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Questions and Answers

What is slaked lime and what is it commonly used for?

  • A compound used for cooking and baking
  • A compound used in construction and renovation (correct)
  • A compound used for fuel
  • A compound used for cleaning and disinfecting

    • What happens when slaked lime solution is exposed to air?

  • It evaporates quickly
  • It reacts with carbon dioxide to form a layer of calcium carbonate (correct)
  • It reacts with oxygen to form a layer of calcium oxide
  • It turns yellow

    • What is the chemical formula of calcium carbonate and what are its properties?

  • CaCO3, a white solid that is insoluble in water and has a high melting point (correct)
  • CaO, a white solid that is soluble in water and has a low melting point
  • Ca(OH)2, a white solid that is soluble in water and has a low melting point
  • CaSO4, a white solid that is insoluble in water and has a high melting point

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