Top 350+ Solved Public Health Engineering MCQ Questions Answer
Q. The maximum permissible chlorine content for public supplies should be between
a. 0.1 to 0.2 ppm
b. 0.3 to 0.4 ppm
c. 1.2 to 4 ppm
d. 6.5 to 8 ppm
Q. A pipe installed for ventilation purpose is called
a. waste pipe
b. soil pipe
c. vent pipe
d. anti-siphonage pipe
Q. The presence of calcium and magnesium chloride in water causes
a. softening
b. bad taste
c. hardness
d. turbidity
Q. In the process of screening, the screens should be inclined at an angle of
a. 10? to 20?
b. 30? to 40?
c. 45? to 60?
d. 70? to 85?
Q. To prevent the formation of crystalline hydrates of 'Ice' of chlorine, the chlorine supply cylinders are kept at a temperature from
a. 10?C to 20?C
b. 20?C to 27?C
c. 27?C to 37?C
d. 38?C to 42?C
Q. Manholes on sewer lines are provided for
a. periodic cleaning
b. providing air for oxidation
c. removal of part of sewerage
d. all of these
Q. The length of rectangular sedimentation tank should not be more than
a. twice
b. three times
c. four times
d. six times
Q. The most commonly used chemical for dechlorination of water is
a. sodium thiosulphate
b. sodium sulphite
c. potassium permaganate
d. all of these
Q. The portion of soil through which lateral movement of water takes place is called
a. water tablean aquiclude
b. an aquiclude
c. zone of saturation
d. none of these
Q. A septic tank is a
a. sedimentation tank
b. digestion tank
c. combination of sedimentation and digestion tank
d. aeration tank