Q. Max. permissible concentration of copper in drinking water in mg/L is

  • (A) 0.01
  • (B) 1.0
  • (C) 0.05
  • (D) 2.0
✅ Correct Answer: (B) 1.0

Published by Ram Sharma ⭐ 193.88K Points at 27-Mar-2022 05:34 pm in Science

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