Fresh domestic sewage is _______________ in color?
Fresh domestic sewage is _______________ in color?
A. Grey
B. Dark brown
C. Red
D. Black
A. Grey
B. Dark brown
C. Red
D. Black
A. Filtration
B. Coagulation
C. Sedimentation
D. Disinfection
A. Bacterial stability factor
B. Relative stability
C. Biological oxygen demand (BOD)
D. Oxygen ion concentration
A. Chemical coagulation
B. Floatation & skimming
C. Centrifugation
D. Ultra filtration
A. Global warming
B. Green house
C. Atmospheric effect
D. Ionosphere
A. A primary pollutant
B. A secondary pollutant
C. Impervious to ultra-violet rays
D. Both B. and C.
A. High temperature incineration
B. Pathological incineration
C. Pyrolysis
D. Underground burial in concrete containers