Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Which one of the following related to domestic potable water quality is correct?

[A].	Turbidity (on Silica scale) is 15-20 ppm or mg/lit.
[B].	Colour (on Cobalt scale) is 15-25 ppm or mg/lit.
[C].	Hardness (expressed as Ca CO₃ equivalent) is 75-115 ppm or mg/lit
[D].	BOD is 20 ppm or mg/lit

Answer: Option C

Explanation:

No answer description available for this question.

Pratik said: (Aug 24, 2019)
Total hardness - 75-115mg/l. Chloride - 250mg/l. Fluorides - 0.5mg/l. Nitrates - 45-100mg/l. Magnesium - 30mg/l. Iron - 0.3 mg/l. Total diaolved solid - 450mg/l. Turbidity - 5-10mg/l. And pH -> 6.5-8.5.

Name *:

Email : (optional)

» Your comments will be displayed only after manual approval.

Interview Questions and Answers