Top 350+ Solved Public Health Engineering MCQ Questions Answer
Q. Grit should be removed from sewage before
a. their disposal in dilution water
b. their lifting by means of pump etc.
c. settling of sewage in sedimentation tank
d. all of the above
Q. If the level of source of water is higher than that of the place of consumption, the system adopted for supplying water is
a. pumping system
b. gravitational system
c. combined pumping and gravity system
d. any one of these
Q. The temporary hardness due to calcium bicarbonates can be removed by
a. boiling
b. lime process
c. lime-soda process
d. zeolite process
Q. Which of the following statement is correct?
a. The pumping system is the best system of water distribution.
b. A sluice valve prevents water to flow back in the opposite direction
c. In a ring system, there is one main supply pipe.
d. all of the above
Q. An egg-shaped cross-section of a sewer
a. is economical than circular cross-section
b. is more stable than circular cross-section
c. provides self cleaning velocity in dry weather
d. none of the above
Q. The lime soda process of water softening
a. requires less quantity of coagulant
b. helps in kolling pathogenic bacterias
c. is suitable for turbid and acidic water
d. all of these
Q. Odours and tastes may result due to the prsence of
a. micro-organisms either dead or alive
b. dissolved gases such as oxygen, carbon dioxide, methane etc.
c. mineral substances such as sodium chloride, iron compounds et
d. all of the above
Q. The lower portion of a manhole is is known as
a. access shaft
b. base
c. working chamber
d. cover
Q. Which of the following statement is wrong?
a. The water carriage system is more hygienic.
b. There is no smell or sight nuisance in the case of water carriage system.
c. The sewers in the water carriage system being all underground do not impair the beauty of the place
d. The initial cost of construction of water carriage system is very low.