Which of the following is an important chemical parameter to consider when assessing
water potability?
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A.
Acidity
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B.
High concentration of heavy metals
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C.
Appropriate pH levels
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D.
High pH
Correct Answer:
C. Appropriate pH levels
Explanation:
Appropriate pH levels are essential for water potability because the pH scale, which ranges from 0 to 14, determines how acidic or basic water is. Drinking water is generally considered safe when it maintains a pH between 6.5 and 8.5. If the pH deviates significantly from this range, it can cause metal pipes to corrode, leading to the leaching of toxic heavy metals like lead into the supply. Furthermore, extreme pH levels can result in an unpleasant bitter taste, reduce the efficiency of chlorine disinfection, and harm aquatic life by increasing the toxicity of other chemicals. While parameters like acidity and high concentrations of heavy metals are related to water quality, maintaining a balanced pH is the foundational chemical measurement for ensuring water is safe for human consumption.
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