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CSS Solved Papers
Physics Chemistry

Engineering :: Environmental Engineering


  Lead poisoning occurs when the lead content in water is
[A]. 300 - 500 ppm[B]. 30 - 50 ppm
[C]. 10 - 15 ppm[D]. 3 - 5 ppm
[E]. 0.3 - 0.5 ppm    

Answer: Option E


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