Waste Water Engineering

A. 200 ppm
B. 225 ppm
C. 250 ppm
D. None of these

A. Must be of adequate size to avoid over flow
B. Must flow under gravity ½ to ¾ full
C. Must be laid at least 2 to 3 m deep to collect /water from the basements
D. All the above

A. Mechanized receipt
B. Mechanized segregation
C. Mechanized pulverising of refuse
D. All of these

A. w r S S
B. w r1/2
C. w r S
D. w r2/3

A. d² (0.011d + 0.785H)/Q
B. d (0.022d + 0.085H)/Q
C. d (0.785d + 0.011H)/Q
D. d (0.285d + 0.011H)/Q

A. At the end of septic tanks
B. On manholes
C. With a W.C. trap
D. At the beginning of sewer line

A. More than 7
B. Less than 7
C. Less than 6
D. More than 6

A. 52.5 cm
B. 67.5 cm
C. 82.5 cm
D. None of these

A. Both A and R is true and R is the correct explanation of A
B. Both A and R is true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true

A. Circular septic tanks
B. Rectangular septic tanks
C. Circular Imhoff double tanks with bottom hoppers
D. Circular Imhoff double storey tanks without bottom hoppers