Waste Water Engineering
To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is

0.60 m/sec
0.75 m/sec
0.70 m/sec
0.50 m/sec

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
The clarigesters are

Circular Imhoff double storey tanks without bottom hoppers
Circular Imhoff double tanks with bottom hoppers
Circular septic tanks
Rectangular septic tanks

ANSWER DOWNLOAD EXAMIANS APP