What is the chemical name of quick lime?
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A.
Calcium carbonate
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B.
Hydrogen sulphide
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C.
Calcium oxide
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D.
Sodium carbonate
Correct Answer:
C. Calcium oxide
Explanation:
The chemical name for quick lime is calcium oxide, represented by the formula CaO. It is an odorless, white or grayish-white caustic crystalline solid at room temperature. This compound is primarily produced through the thermal decomposition, or calcination, of limestone or seashells containing calcium carbonate in a lime kiln at temperatures exceeding 900 degrees Celsius. Calcium oxide is highly reactive with water; when combined, it undergoes an exothermic reaction to form calcium hydroxide, also known as slaked lime. Due to its alkaline properties and high-temperature stability, quick lime is extensively used in the production of cement, steel, and paper, as well as for pH adjustment in water treatment processes.
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