Q. The maximum permissible chlorine content for public supplies should be between (Solved)

1. 0.1 to 0.2 ppm

2. 0.3 to 0.4 ppm

3. 1.2 to 4 ppm

4. 6.5 to 8 ppm

  • a. 0.1 to 0.2 ppm

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