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In detritus tanks______________________?
  • (A)  Flow velocity is kept 0.09 m/sec
  • (B)  Detention period is kept 3 to 4 minutes
  • (C)  Organic and inorganic materials are separated
  • (D)  All the above
The screens are fixed___________________?
  • (A)  Perpendicular to the direction of flow
  • (B)  Parallel to the direction of flow
  • (C)  At an angle 30° to 60° to the direction of flow
  • (D)  None of these