Top 350+ Solved Public Health Engineering MCQ Questions Answer
Q. In primary settling tank, suspended solids are reduced from
a. 10 to 20%
b. 20 to 40%
c. 40 to 70%
d. 70 to 90%
Q. A combined system will be favourable when
a. the sewers are to be laid in rocks
b. the finances are limited
c. the topography is flat necessitating deep excavation for combined sewers
d. the locality to be served has narrow streets
Q. The maximum permissible temperature for domestic supply is
a. 5 to 10?C
b. 10 to 15?C
c. 15 to 20?C
d. 20 to 25?C
Q. Which of the following is not a coagulating agent?
a. Ferric sulphate
b. Ferric chloride
c. Aluminium sulphate
d. Copper sulphate
Q. The bio-chemical treatment of sewage effluent is a process of
a. oxidation
b. deoxidation
c. self purification
d. sedimentation
Q. The design period for a water supply project is taken as
a. 5 to 10 years
b. 10 to 15 years
c. 15 to 20 years
d. 20 to 30 years
Q. Which of the following statement is correct?
a. Pre-chlorination reduces the bacterial load on filters.
b. The substance used for disinfection of water is known as coagulant.
c. Chlorine cannot be applied in the form of chloramines.
d. all of the above
Q. In order to prevent water to flow back in opposite direction, we shall use a
a. scour valve
b. air valve
c. gate valve
d. reflux valve
Q. The effluents from the septic tank are discharged into
a. soak pit
b. drainage
c. oxidation pond
d. sewer
Q. Which of the following statement is wrong?
a. The water closets should be such that excreta do not stick to it
b. The trap prevents the entry of foul gases.
c. The trap should have self cleaning velocity
d. The water closet is provided for receiving garbage.
Q. Zeolite process is also known as
a. base exchange process
b. Cation exchange process
c. both (a) and (b)
d. none of these