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)

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Definitions:

Affect Intensity

The strength or degree of emotional responses to stimuli or situations.

Positive Experiences

Events or interactions that induce feelings of happiness, satisfaction, or well-being in an individual.

Negative Experiences

Events or situations that lead to unpleasant emotions or outcomes.

Achievement Behavior

Actions aimed at accomplishing tasks and attaining goals, often motivated by personal standards of excellence.