Which instrument is commonly used to measure the turbidity of drinking water?
Correct answer: D. Nephelometer
- A. Chlorine comparator
- B. pH meter
- C. BOD incubator
- D. Nephelometer
Explanation
A nephelometer measures turbidity by detecting light scattered by suspended particles in water. A pH meter measures acidity, while a BOD incubator and chlorine comparator serve different testing purposes.
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About Environmental Engineering
Environmental engineering examines water supply, water quality, treatment processes, wastewater collection and treatment, solid waste management, air pollution and public health protection. It covers sedimentation, coagulation, filtration, disinfection, biological treatment and disposal methods, while distinguishing drinking-water treatment from sewage treatment and BOD from COD.
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