Download Aptitude Crack
img not found img not found

UPSC Civil Service Exam Questions

Q1: 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

ANS:C - Hardness (expressed as Ca CO3 equivalent) is 75-115 ppm or mg/lit

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.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.