1.

The self clearing velocity for all sewers in India is

A. 1.0 m/s to 1.2 m/s
B. less than 1 m/s
C. 1.5 m/s to 2.0 m/s
D. 3.0 m/s to 3.5 m/s
Answer» B. less than 1 m/s


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