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CSS Solved Papers
Physics Chemistry

Engineering :: Public Health Engineering

  The maximum permissible chlorine content for public supplies should be between
[A]. 0.1 to 0.2 ppm[B]. 0.3 to 0.4 ppm
[C]. 1.2 to 4 ppm[D]. 6.5 to 8 ppm

Answer: Option A
rajbeer padhee said:    
 
0.3 to 0.5 ppm
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