Top 350+ Solved Public Health Engineering MCQ Questions Answer
Q. Rapid sand filter can remove bacterias upto an extent of
a. 60% to 70%
b. 70% to 80%
c. 80% to 90%
d. 90% to 99%
Q. The water bearing strala i.e. layers of sand, gravel etc, is called
a. an acquifer
b. an aquiclude
c. an aquifuge
d. zone of saturation
Q. The area of the openings in screens should be such that the velocity of flow through them does not exceed
a. 0.75 to 1 m/s
b. 1.5 to 3 m/s
c. 3 to 5 m/s
d. 5 to 6 m/s
Q. In secondary treatment of sewage, the operation which takes place is
a. removal of heavier suspended inorganic material
b. removal of fine dissolved organic material
c. removal of harmful bacterias
d. all of the above
Q. The presence of hydrogen sulphide in water causes
a. softening
b. alkalinity
c. aciity
d. bad taste
Q. Which of the following statement is wrong?
a. The quality of tube well water is better than that of surface sources.
b. The discharge of tube well is more than that of an open well.
c. The tube well should not derive water from the first pervious strata.
d. none of the above
Q. The water from kitchens, bathrooms, wash basins is called
a. sewage
b. sullage
c. raw sewage
d. none of these
Q. The suitable layout of a distribution system for well planned cities is
a. dead end system
b. ring system
c. radial system
d. grid iron system
Q. Crystalline hydrates of 'Ice" of chlorine are formed at a temerature of
a. below 10?C
b. 15?C
c. 20?C
d. above 20?C
Q. The detention time for an ordinary plain sedimentation tank is
a. 1 to 2 hours
b. 2 to 4 hours
c. 6 to 8 hours
d. 20 to 24 hours