What Is The Limestone Cycle?

The video tutorial explains the limestone cycle, starting with the reaction of lime water turning milky due to calcium carbonate formation. It covers the formation of limestone from marine organisms, its uses, and the thermal decomposition process in a rotary kiln to produce quick lime and carbon dioxide. The cycle continues with the reaction of quick lime with water to form slaked lime, which dissolves to create lime water. The cycle completes when lime water reacts with carbon dioxide to form calcium carbonate again. The tutorial emphasizes the chemical processes and real-life applications of limestone.

What causes lime water to turn milky when a certain gas is passed through it?

• Formation of calcium carbonate

• Formation of calcium oxide

• Formation of calcium sulfate

• Formation of calcium hydroxide

What is the chemical name for quick lime?

• Calcium hydroxide

• Calcium oxide

• Calcium sulfate

• Calcium carbonate

Which type of reaction is involved in the formation of slaked lime from quick lime?

• Endothermic reaction

• Exothermic reaction

• Neutralization reaction

• Precipitation reaction

What happens when carbon dioxide is continuously passed through lime water?

• Lime water turns red

• Lime water turns blue

• Lime water turns clear

• Lime water remains milky

What is the main component of limestone?

• Calcium hydroxide

• Calcium oxide

• Calcium carbonate

• Calcium sulfate