Top 350+ Solved Environmental Engineering MCQ Questions Answer
Q. Which of the following filter is used in the anaerobic treatment of sewage?
a. intermittent sand
b. trickling filter
c. contact filter
d. biological filter
Q. The maximum size of filter media of apercolating filter is
a. 10mm
b. b) 25mm
c. c) 60mm
d. d) 75mm
Q. Which of the following is an anaerobic process for treating sewage?
a. oxidation pond
b. imhoff tank
c. oxidation ditch
d. rotating biological contactors
Q. The detention period of oxidation pond is
a. 12-36 hours
b. 4 hours
c. 10-20 days
d. 30-60 seconds
Q. What is the minimum depth of water to be kept in the oxidation pond?
a. 0.3m
b. 0.5m
c. 1 m
d. 1.5m
Q. What is the range of MLSS concentration in oxidation ditch?
a. 500-1000 mg/l
b. 1000-2000 mg/l
c. 2000-4000mg/l
d. 3000-5000 mg/l
Q. Which of the following process is not adopted in oxidation ditches?
a. adsorption
b. desorption
c. oxidation
d. decomposition
Q. The disposal of sewage from the septic tank is done by which of the following?
a. clarifier
b. soak pit
c. aerated lagoon
d. lamp holes