Civil Engineering - UPSC Civil Service Exam Questions - Discussion

5. 

Which of the following statements is NOT correct ?

[A]. Chlorides in potable water may be present from 300 ppm to 500 ppm.
[B]. In order to be safe against pathogenic bacteria residual chlorine should remain between 0.05 ppm and 0.20 ppm.
[C]. Presence of iron and maganese in excess of 0.3 ppm in dirinking water is objectionable.
[D]. pH value for pure water is nearly 7.

Answer: Option A

Explanation:

No answer description available for this question.

Karthika.C said: (Jul 22, 2017)  
Chloride limit is permitted in the potable water 250ppm.

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