Question

Calcium hydroxide also known as

• A. Burnt lime
• B. Slaked lime
• C. Quick lime
• D. Black lime

Hint:

CaO = Quick lime; $Ca(OH)_{2}$ = Slaked lime.

Answer 1

The Correct Option is B

Step 1: Concept
Calcium compounds have various common names based on their chemical state and hydration.

Step 2: Meaning
Calcium hydroxide has the chemical formula $Ca(OH)_{2}$.

Step 3: Analysis
"Quick lime" refers to calcium oxide ($CaO$). When water is added to quick lime, it becomes "slaked" (hydrated), resulting in calcium hydroxide.

Step 4: Conclusion
Thus, the common name for hydrated calcium hydroxide is slaked lime.

Final Answer: (B)