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Q: Which of the following pairs of parameters of drinking water and their desirable limits is correctly matched (as per IS 10500:1991)?
  • A. Chlorides – 250 mg/l
  • B. Fluorides – 0.5 mg/l
  • C. pH – 7
  • D. Iron – 0.5 mg/l
Correct Answer: Option A -
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Explanations:

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