Which of the following is commonly known as quicklime?

Calcium hydroxide

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Calcium oxide

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Carbon dioxide

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Sodium oxide

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Solution

The correct option is B Calcium oxide
Calcium oxide is commonly known as quicklime. It is produced by thermal decomposition of materials containing calcium carbonate. The decomposition of calcium carbonate gives calcium oxide along with the evolution of carbon dioxide.
The reaction involved is:
${CaCO}_{3} (s) Heat ⟶$ $CaO(s) + {CO}_{2} (g)$

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