What is another name for calcium oxide?

Correct option is C

Ans. (c) Quick lime

Sol.Calcium oxide (CaO) is commonly known as Quick Lime. It is a white, caustic, alkaline, crystalline solid that is produced by heating limestone (calcium carbonate, CaCO₃) in a kiln at high temperatures. This process, called calcination, releases carbon dioxide and leaves behind quick lime. Quick lime is widely used in construction, agriculture, and chemical industries.

Information Booster:

• Quick Lime reacts with water to form Slaked Lime (Calcium Hydroxide, Ca(OH)₂), releasing heat.
• It is an essential ingredient in cement and mortar production.
• It is used for pH regulation in agriculture to reduce soil acidity.
• In chemical industries, it is used for water purification and in the manufacture of steel.
• It has applications in glass manufacturing and as a drying agent in laboratories.
• Quick Lime is used in waste treatment and pollution control to neutralize acidic gases.
• It is also used in the paper and textile industries for bleaching and refining processes.

Additional Information:

• (a) Lime Soda – A mixture of lime (CaO) and soda ash (Na₂CO₃), used in softening hard water.
• (b) Baking Soda – Chemically Sodium Bicarbonate (NaHCO₃), used in baking, cleaning, and medicine.
• (d) Cement – A mixture of limestone, clay, and other minerals, used as a construction material but is not pure calcium oxide.