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