Waste Water Engineering - Study Mode
[#186] For large sewers, maximum distance between manholes may be
Correct Answer
(D) 300 m
[#187] In sewage, the solids in mg per litre is
Correct Answer
(B) 500 to 1000
[#188] For the COD test of sewage, organic matter is oxidised by K 2 Cr 2 O 7 in the presence of
Correct Answer
(A) H 2 SO 4
[#189] To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of
Correct Answer
(B) Sulphuric acid
[#190] Pathogens (or pathogenic bacterias) in water may cause
Correct Answer
(D) All the above