A. check valve
B. sluice valve
C. safety valve
D. scour valve
A. circle method
B. equivalent pipe method
C. electrical analysis method
D. Hardy cross method
A. grid iron system
B. dead end system
C. ring system
D. radial system
A. dead end system
B. grid iron system
C. radial system
D. ring system
A. disinfection
B. removing hardness
C. removing odours
D. removing corrosiveness
A. reduced at higher pH value of water
B. unaffected by pH value of water
C. increased at higher pH value of water
D. highest at pH value equal to 7
A. 9500
B. 9800
C. 10100
D. 10920
A. ultra violet rays treatment
B. lime treatment
C. by using potassium permanganate
D. chlorination