Which item is not listed as a chemical characteristic in the described water quality context?

Which item is not listed as a chemical characteristic in the described water quality context?

• A. Gases
• B. Hardness
• C. Turbidity
• D. pH

Answer: (C)

The idea here is distinguishing chemical from physical properties in water quality. Chemical characteristics describe what is dissolved or present as chemical species in the water—dissolved gases, minerals that contribute to hardness, and measures like pH that reflect acidity or alkalinity. Turbidity, by contrast, measures how clear the water is due to suspended particles, a physical property of the water’s appearance and feel rather than its chemical composition. Because of that, turbidity is not a chemical characteristic.

The idea here is distinguishing chemical from physical properties in water quality. Chemical characteristics describe what is dissolved or present as chemical species in the water—dissolved gases, minerals that contribute to hardness, and measures like pH that reflect acidity or alkalinity. Turbidity, by contrast, measures how clear the water is due to suspended particles, a physical property of the water’s appearance and feel rather than its chemical composition. Because of that, turbidity is not a chemical characteristic.