Waste Water Engineering
The disintegrating pump in which solid matter is broken up before passing out, is

Pneumatic ejector
Centrifugal pump
None of these
Reciprocating pump

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Waste Water Engineering
The clarigesters are

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

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