Top 250+ Solved Water and Wastewater Engineering MCQ Questions Answer
Q. An earth formation which, although porous and capable of absorbing water does not provide anappreciable supply to wells, is known as
a. Aquifer
b. Aquiclude
c. Aquifuge
d. None of these
Q. Property of earth to allow water to pass through it, is known as
a. Perviousness
b. Porosity
c. Permeability
d. Tr
Q. If G is the specific gravity of particles of diameter d, the velocity of settlement V in still water atT°C, according to Stoke's law, is
a. V = 418 (G - 1) d² [(3T + 70)/100]
b. V = 418 (G - 1) d [(3T - 70)/100]
c. V = 418 (G - 1) d² [(2T + 70)/100]
d. V = 418 (G - 1) d 4 [(3T + 70)/100]
Q. Distribution mains of any water supply, is normally designed for its average daily requirement
a. 100 %
b. 150 %
c. 200 %
d. 225 %
Q. The rate of silting in a reservoir
a. Is less in the beginning
b. Remains constant throughout
c. Is more in the beginning
d. is more in the beginning and reduces in the end
Q. Corrosion of well pipes may not be reduced by
a. Reducing the draw down and the pumping rate
b. Reducing the flow velocity
c. Using thicker pipes
d. Using screens having larger area of openings
Q. Recuperation test is carried out to determine
a. Turbidity of water
b. pH value of water
c. Yield of well
d. Discharge from a well
Q. Pick up the incorrect statement from the following. The underground sources of water, is from
a. Wells
b. Springs
c. Infiltration wells
d. Storage reservoirs
Q. Most important method for calculating discharge for planning a water supply project, is
a. Velocity area method
b. Weir or spillway method
c. Use of venturi-meter
d. Using power plant consumption
Q. In a rapid sand filter, air binding is caused due to excessive
a. Negative pressure
b. Pressure
c. Turbidity
d. Water pressure
Q. One degree of hardness of water means a content of salts of
a. 10.25 mg/litre
b. 12.25 mg/litre
c. 14.25 mg/litre
d. 16.25 mg/litre
Q. Manholes are less common in
a. Cast iron pipes
b. Steel pipes
c. Hume steel pipes
d. R.C.C. pipes
Q. For determining the velocity of flow of underground water, the most commonly usednonempirical formula is
a. Darcy's formula
b. Slichter's formula
c. Hazen's formula
d. Lacy's formula