How is quicklime made?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. By decomposition of calcium carbonate into calcium oxide and carbon dioxide on heating
Quicklime is the common name for burnt limestone, calcium oxide (CaO).
- Quicklime is produced by heating crushed limestone to around 1,100 degrees Celsius in a shaft furnace or rotary kiln.
- The heating of limestone releases carbon dioxide, leaving calcium oxide
- (CaCO3 produces CaO + CO2).