- (A) ring system
- (B) dead end system
- (C) radial system
- (D) grid iron system
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- (A) circle method
- (B) equivalent pipe method
- (C) Hardy cross method
- (D) electrical analysis method
- (A) reflux valve
- (B) sluice valve
- (C) air relief valve
- (D) pressure relief valve
- (A) house sewer
- (B) lateral sewer
- (C) intercepting sewer
- (D) submain sewer
- (A) separate system
- (B) combined system
- (C) partially combined system
- (D) partially separate system
- (A) 1000
- (B) 4000
- (C) 100000
- (D) 400000
- (A) equal to HMD when flowing full
- (B) less than HMD when flowing full
- (C) greater than HM
- (D) when flowing full
- (A) 10 years
- (B) 25 years
- (C) 50 years
- (D) 75 years
- (A) 24 – 48 hours
- (B) 10-12 days
- (C) 2-3 months
- (D) 1-2 year
- (A) removal of turbidity
- (B) removal of hardness
- (C) killing of disease bacteria
- (D) complete sterilisation
