Which of the Following Compounds Was Used by the Ancient

question 9

Multiple Choice

Which of the following compounds was used by the ancient Egyptians and is still used today to remove visible impurities in water?

• A) Sand (SiO₂)
• B) Aluminum(III)hydroxide (Al(OH)₃)
• C) Slaked lime (Ca(OH)₂)
• D) Alum (KAl(SO₄)₂)
• E) Chlorine (Cl₂)

---

Definitions:

Performance Appraisals

A systematic evaluation of an employee's job performance and productivity to understand their abilities for further growth and development.

Legally Defensible

Pertains to actions, decisions, or policies that can be successfully upheld in a court of law or against legal scrutiny.

Court

A legal institution where disputes are resolved and justice is administered under the law.

Jeffrey Pfeffer

An American business theorist and professor at Stanford University, known for his work on organizational behavior and human resources.