Related Questions

Sewage sludge is an example of the __________ fluid.
A Bingham plastic
B Newtonion
C Pseudoplastic
D Dilatent
The main type of sludge gas evolved during sewage treatment in Imhoff tank is
A CO2
B CH4
C CO
D H2
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
A Filtration
B Digestion
C Sedimentation
D Both B and C
Fine grit present in sewage is removed in the __________ during sewage treatment.
A Grit chamber
B Detritus tank
C Trickling filter
D Skimming tank
__________ substances present in sewage are removed in grit chamber during sewage treatment.
A Organic
B Fatty
C Inorganic
D Dissolved
For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as
A 4.5 to 6.0
B 6.5 to 8.0
C 8.5 to 10.0
D 10.5 to 12.0
For normal sludge, the value of sludge index for Indian conditions is
A 0 to 50
B 50 to 150
C 150 to 350
D 350 to 500
Which of the following is the most common pump for pumping either raw sewage or sludge?
A Electromagnetic pump
B Centrifugal pump
C Reciprocating pump
D Gear pump
Sludge banks are formed if sewage is disposed of in
A Rivers
B Seas
C Lakes
D None of these
Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is?
A Centrifugal pump
B Pneumatic ejector
C Reciprocating pump
D None of these

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