Related Questions

During purification process of sewage the gas given off, is
A Carbon dioxide
B Hydrogen
C Ammonia
D All the above
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
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
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is
A H2
B CH4
C CO2
D N2
Which of the following pumps is 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
When there is no recirculation of sewage, then recirculation factor is
A 0
B 1
C Infinity
D None of the above
No treatment of the sewage is given if dilution factor is
A Less than 150
B Between 150 to 200
C Between 200 to 300
D More than 500
Zone refining is used for the purification of
A Au
B Ge
C Ag
D Cu

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