Correct option is A
The correct answer is (a) Slaked lime.
· Slaked lime is the common name for calcium hydroxide, which is produced by adding water to quicklime (calcium oxide).
· It is widely used in various industries, including the chemical industry, construction, agriculture, and wastewater treatment.
· In the chemical industry, slaked lime is used in processes such as water treatment, manufacturing of paper, leather production, and as a pH regulator in various chemical reactions.
Facts to remember:
·
Calomel is the common name for mercury(I) chloride (Hg2Cl2), a compound consisting of mercury and chlorine.
·
Burnt lime is another term for quicklime or calcium oxide (CaO).
· It is produced by heating limestone (calcium carbonate) at high temperatures in a kiln.
·
Limestone is a sedimentary rock composed mainly of calcium carbonate (CaCO3).
· It is formed over millions of years through the accumulation of marine fossils and calcium-rich sediments.