The formula for quicklime is I. CaCl2 II. CaCo3 III. Ca(OH)2 IV. CaO
Option d..The correct answer is CaO. Calcium Oxide is one of the oldest chemicals known to humans. Properties of Calcium Oxide. It is an amorphous solid. It has a melting point of 2572°C. It is a very stable compound and withstands high temperatures. It is prepared from Calcium Carbonate. CaCO3 → CaO + CO2 Uses of Calcium Oxide. It is extensively used for medicinal purposes and insecticides. It is used in the manufacturing of cement, paper, and high-grade steel. It is used as a reagent in laboratories for dehydration, precipitation reaction, etc.