C:-0.1
D:-1
Correct Answer:- Option-D
Question48:-Aquifer in which water table serves as the upper zone of saturation is
A:-Non artesian aquifer
B:-Artesian aquifer
C:-Confined aquifer
D:-Aquifuge
Correct Answer:- Option-A
Question49:-Piles used to protect water front structures against impact from floating bodies are
A:-Anchor piles
B:-Fender piles
C:-Sheet piles
D:-Batter piles
Correct Answer:- Option-B
Question50:-The seepage velocity (Va) is connected to discharge velocity (V) and porosity (n) by

B:-Va = V.n°
C:-Va= *V_((n)/(1-n))*
D:-Va= *V_((n)/(1+n))°
Correct Answer:- Option-A
Question51:-A discrete particle undergoing plain sedimentation in a se!
captured in the tank with 100% efficiency, if the settling velocity ("Vs)°
A: Vs> > *(Q)(LB)
5:4௮ ಆ (൭/8)
೦-೫6" < (0/80)
D:-Vs* < *(Q)/(BD)
Correct Answer:- Option-A
Question52:-The coagulant used for treating boiler feed water 15
A:-Alum
B:-Sodium aluminate
C:-Chlorinated Copperas
D:-Copperas
Correct Answer:- Option-B
Question53:-Which property of the aggregate is found by impact test ?
A:-Toughness
B:-Hardness
C:-Endurance
D:-Fatigue
Correct Answer:- Option-A
Question54:-The permissible limit of hardness for drinking water according to IS 10500, 2012 is
A:-200 mg/L
B:-300 mg/L
C:-600 mg/L
D:-400 mg/L
Correct Answer:- Option-C
Question55:-The effective pressure at any plane in a soil mass is equal to
A:-Total vertical pressure
B:-Neutral pressure
C:-Neutral pressure minus pore pressure
D:-Total vertical pressure minus pore pressure
Correct Answer:- Option-D
Question56:-A 20 m chain was found to be 0.02 m too long after chaining 100 m. It was found to be 0.04 m too long after
chaining 600 m. If the chain was correct before commencement of work then the true distance is
A:-600.8 m
B:-600.4 m
C:-600.6 m
D:-600.3 m
Correct Answer:- Option-A

tank of length L, Breadth B, and Depth D will be
* (Q=discharge in the tank).