Corrosion in concrete sewers is caused by
A. Septic conditions
B. Dissolved oxygen
C. Chlorine
D. Nitrogen
Answer: Option A
This Question Belongs to Civil Engineering >> Environmental Engineering
Related Questions on Environmental Engineering
The distribution mains are designed for
A. Maximum daily demand
B. Maximum hourly demand
C. Average daily demand
D. Maximum hourly demand on maximum day
Sewage treatment units are designed for
A. Maximum flow only
B. Minimum flow only
C. Average flow only
D. Maximum and minimum flow
A. 4.5 to 6.0
B. 6.5 to 8.0
C. 8.5 to 10.0
D. 10.5 to 12.0
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