TLV of mercury in potable (drinking) water is about ______________ ppm?
Correct answer: A. 0.001
- A. 0.001
- B. 0.1
- C. 1
- D. 5
Explanation
Mercury is highly toxic and its permissible concentration in drinking water is about 0.001 ppm. The larger values would represent dangerously excessive contamination rather than a potable-water limit.
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