A. maximum flow only
B. minimum flow only
C. average flow only
D. maximum and minimum flow
Related Mcqs:
- Sewerage system is usually designed for_________________?
A. 10 years
B. 25 years
C. 50 years
D. 75 years - Sewage treatment units are designed for_______________?
A. maximum flow only
B. minimum flow only
C. average flow only
D. maximum and minimum flow - For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be________________?
A. separate system
B. combined system
C. partially combined system
D. partially separate system - The distribution mains are designed for________________?
A. maximum daily demand
B. maximum hourly demand
C. average daily demand
D. maximum hourly demand on maxi¬mum day - Sewage treatment units are normally designed for______________?
A. 5-10 years
B. 15-20 years
C. 30-40 years
D. 40-50 years - The most common cause of acidity in water is_______________?
A. carbon dioxide
B. oxygen
C. hydrogen
D. nitrogen - The suitable method for disinfection of swimming pool water is________________?
A. ultra violet rays treatment
B. lime treatment
C. by using potassium permanganate
D. chlorination - If the sewage contains grease and fatty oils, these are removed in_________________?
A. grit chambers
B. detritus tanks
C. skimming tanks
D. sedimentation tanks - The hydraulic mean depth (HMD. for an egg-shaped sewer flowing two-third full is_______________?
A. equal to HMD when flowing full
B. less than HMD when flowing full
C. greater than HMD when flowing full
D. none of the above - The detention period in coagulation tanks is usually kept as_______________?
A. 1 to 2 minutes
B. 30 to 45 minutes
C. 2 to 6 hours
D. 2 to 6 days
