Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 26 (Q.No. 5)

UPSC Civil Service Exam Questions

Which of the following statements is NOT correct ?

Chlorides in potable water may be present from 300 ppm to 500 ppm.

In order to be safe against pathogenic bacteria residual chlorine should remain between 0.05 ppm and 0.20 ppm.

Presence of iron and maganese in excess of 0.3 ppm in dirinking water is objectionable.

pH value for pure water is nearly 7.

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

3 comments Page 1 of 1.

Rahul verma said: 2 years ago

200ppm acceptable limit.

1000ppm permissible limit.

(1)

Kaushik said: 3 years ago

Chloride:- 250 mg/l.

Karthika.c said: 7 years ago

Chloride limit is permitted in the potable water 250ppm.

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