Top 350+ Solved Public Health Engineering MCQ Questions Answer
Q. The alum when mixed with water as a coagulant,
a. does not effect pH value of water
b. decreases pH value of water
c. increases pH value of water
d. none of these
Q. Which of the following statement is correct?
a. Slow sand filters work under atmospheric pressure.
b. Rapid sand filters require coagulation.
c. Rapid sand filters should be cleaned after 2 to 3 days
d. all of the above
Q. Egg-shaped sewers are generally used for
a. separate system
b. combined system
c. partially separate system
d. all of these
Q. Grit chambers of a sewage plant are usually changed after
a. 1 day
b. 1 week
c. 2 weeks
d. 4 weeks
Q. Low turbidity of water can be determined by
a. turbidity tube
b. Jacksons turbidimeter
c. Baylis turbidimeter
d. Hellipe turbidimeter
Q. High turbidity of water can be determined by
a. turbidity tube
b. Jacksons turbidimeter
c. Baylis turbidimeter
d. Hellipe turbidimeter
Q. The maximum permissible hardness in water for drinking purposes should not exceed 100 ppm.
a. Correct
b. Incorrect
Q. Copper sulphate is the most common chemical used for controlling
a. bacteria
b. algae
c. silt
d. mineral matter
Q. Rapid sand filter can remove turbidity from water upto an extent of
a. 15 to 25 ppm
b. 25 to 35 ppm
c. 35 to 40 ppm
d. 40 to 50 ppm
Q. A sewer which receives storm water, surface run-off and sewage is called a
a. common sewer
b. combined sewer
c. branch sewer
d. outfall sewer