Top 350+ Solved Public Health Engineering MCQ Questions Answer
Q. A pipe conveying sewage from the plumbing system of a singe building to a common sewer or to the point of immediate disposal is called
a. common sewer
b. house sewer
c. lateral sewer
d. outfall sewer
Q. Which of the following statement is wrong?
a. A check valve is provided on the delivery side in between the pump and the gate valve.
b. A pressure relief and air valve are provided on the delivery side.
c. Scour valves are provided at high points
d. all of the above
Q. In a plain sedimentation tank, under normal conditions, impurities are removed upto
a. 50%
b. 60%
c. 70%
d. 80%
Q. The colour of water is expressed in numbers of a
a. silica scale
b. platinum cobalt scale
c. pO value
d. none of these
Q. The percentage of chlorine in fresh bleaching powder is
a. 20 to 25%
b. 25 to 30%
c. 30 to 35%
d. 35 to 40%
Q. The amount of chlorine used for plain chlorination of water is about
a. 0.2 ppm
b. 0.3 ppm
c. 0.4 ppm
d. 0.5 ppm
Q. The corrosion in pipe is due to
a. dissolved oxygen in water
b. pH value of water
c. impurities in the material particularly those having a lower potential
d. all of the above
Q. The method in which different types of refuse are collected, carried and disposed off separately is called
a. conservancy method
b. dry method
c. water carriage method
d. either (a) and (b)