The best guide to judge the general quality of water is the measurement of its__________________?
Correct answer: B. Electrical conductivity
- A. pH value
- B. Electrical conductivity
- C. Turbidity
- D. Dissolved oxygen content
Explanation
Electrical conductivity reflects the concentration of dissolved ionic substances, so it provides a useful overall indication of water quality or dissolved-salt content. pH measures only acidity or alkalinity, while turbidity and dissolved oxygen describe narrower aspects of quality.
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