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
Answer:C
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