Top 350+ Solved Environmental Engineering MCQ Questions Answer
Q. is the velocity at which the solid matter in sewage remained in suspended form.
a. settling velocity
b. self cleansing velocity
c. mean velocity
d. non scouring velocity
Q. Primary treatment of sewage consistsof removal of
a. large suspendedorganic solids
b. oil and grease
c. sandand grit
d. floating materials
Q. The most widely used pumps forsewage lifting is
a. centrifugal pummp
b. reciprocating pump
c. pneumaticejector
d. air pressure pump
Q. Drop man holes are generally providedin sewers for
a. industrial reas
b. large township
c. hillytownships
d. cities in plains
Q. In which pollution zone of the river, growth of algae reappear?
a. zone of degradation
b. zone of recovery
c. zone of active decomposition
d. zone of clean water
Q. In which pollution zone of the river, the dissolved oxygen reduced to 0?
a. zone of degradation
b. zone of recovery
c. zone of clean water
d. zone of active decomposition
Q. Which is the third zone of pollution in the river?
a. zone of recovery
b. zone of degradation
c. zone of clean water
d. zone of active decomposition
Q. What is yellow curve represents in the following figure?
a. deoxygenation curve
b. reoxygenation curve
c. oxygen sag curve
d. equilibrium concentration of oxygen
Q. Which of the following is represented b the green curve in the above figure?
a. deoxygenation curve
b. reoxygenation curve
c. oxygen sag curve
d. equilibrium concentration of oxygen
Q. The maximum deficiency of dissolved oxygen is represented by
a. dotted blue line
b. green curve
c. yellow curve
d. violet curve
Q. Which of the following represents the oxygen sag curve in the following figure?
a. dotted blue line
b. green curve
c. yellow curve
d. red curve
Q. The reoxygenation constant at temperature ‘T’ is expressed by
a. krt = kr20 (1.016)t
b. krt = kr20 (1.047) t-20
c. krt = kr20 (1.016)t-20
d. krt = kr20 (1.047)t