Top 350+ Solved Public Health Engineering MCQ Questions Answer
Q. The total count of bacteria per cubic centimetre for domestic purposes varies from
a. 0 to 100
b. 100 to 150
c. 150 to 200
d. 200 to 250
Q. The minimum dissolved oxygen required in water to save the aquatic life is
a. 1 ppm
b. 2 ppm
c. 4 ppm
d. 8 ppm
Q. Which of the following statement is wrong?
a. For land disposal, large areas with preferably sandy types of soil are required.
b. The land disposal requires either preliminary or primary treatment of sewage.
c. The land disposal saves the inland stream from getting polluted by sewage.
d. none of the above
Q. B-coli or E-coli are harmless organisms but their presence in water indicates the
a. presence of pathogenic bacteria
b. absence of pathogenic bacteria
c. presence of non-pathogenic bacteria
d. absence of non-pathogenic bacteria
Q. The maximum permissible quantity of iron and manganese in water for domestic purposes should be
a. 0.1 ppm
b. 0.3 ppm
c. 0.6 ppm
d. 0.8 ppm
Q. The maximum permissible fluorine content in water for domestic supplies should be
a. 0.15 ppm
b. 1.5 ppm
c. 15 ppm
d. 150 ppm
Q. The capacity of the pumps is normally expressed as
a. litres per minute
b. cubic metres per day
c. thousands of litres per hour
d. all of these
Q. The volume of a settling basin is large due to
a. large volumes of floc added for coagulation
b. large amount of water entrapped into it
c. greater amount of suspended solids to be removed
d. none of the above
Q. The main object of sewage disposal is
a. to dispose off properly human excreta to a safe place before its creates unhealthy conditions in the locality
b. to dispose off waste water from an area so that it may not become breeding place for mosquitoes
c. to dispose off the sewage after giving it treatment so that the receiving land may not get polluted
d. all of the above