Top 250+ Solved Water and Wastewater Engineering MCQ Questions Answer
Q. The capability of a soil mass of full width and depth to transmit water, is known
a. Porosity
b. Permeability
c. Transmissibility
d. None of these
Q. By boiling water, hardness can be removed if it is due to
a. Calcium sulphate
b. Magnesium sulphate
c. Calcium nitrate
d. Calcium bicarbonate
Q. Percussion drilling is unsuitable in
a. Unconsolidated sand
b. Unconsolidated gravel
c. Quick sand
d. Consolidated rocks
Q. Rapid gravity filters can remove bacterial impurities up to a maximum of
a. 50 %
b. 60 %
c. 70 %
d. 80 %
Q. Continuous flow of water can be expected from
a. Gravity springs
b. Surface springs
c. Artesian springs
d. None of these
Q. Reciprocating pumps
a. Are not suitable for variable heads
b. Are four times costlier than centrifugal pumps
c. Are not suitable for pumping water containing sediments
d. Single stroke produce pulsating flow
Q. Low turbidity of water is detected by
a. Turbidity tube
b. Jackson turbidity meter
c. Baylis turbidimeter
d. Hellige turbidimeter
Q. Silt storage is the same as
a. Dead storage
b. Live storage
c. Effective storage
d. None of these
Q. The type of pipe commonly used in water supply distribution schemes, is
a. R.C.C. pipes
b. Hume pipes
c. Cast iron pipes
d. G.I. pipes
Q. Pick up the incorrect statement from the following. The source of surface water is from
a. Streams and rivers
b. Storage reservoirs
c. Springs
d. Ponds and lakes
Q. m and n are monsoon duration factor and catchment factor respectively. If P is yearly rainfall in cm, runoff can be calculated by
a. Velocity area method
b. Weir or spillway method
c. Use of venturi-meter
d. Using power plant consumption
Q. In a rapid gravity filter
a. Raw water from the source is supplied
b. Disinfected raw water is supplied
c. Raw water passed through coagulation tank is supplied
d. None of these
Q. The maximum permissible nitrites in public water supplies, is
a. Nil
b. 0.5 P.P.M.
c. 1.0. P.P.M.
d. 1.5 P.P.M.
Q. Most commonly used section in grade aqueducts, is
a. Circular
b. Rectangular
c. Parabolic
d. Horse shoe section
Q. The most important and widely used tube well in India, is
a. Strainer well
b. Cavity well
c. Slotted well
d. Perforated pipe well