Explore topic-wise MCQs in Waste Water Engineering.

This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Waste Water Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the minimum pH to be maintained for the process?

A. 5.6
B. 6.3
C. 7.5
D. 8.2
Answer» C. 7.5
Discussion
2.

A clarified effluent is extracted from the ______ of the reactor.

A. Top
B. Side
C. Bottom
D. Central pipe
Answer» B. Side
Discussion
3.

_______ deflects the materials downwards.

A. Baffles
B. Sloped walls
C. Deflectors
D. Separator
Answer» C. Deflectors
Discussion
4.

What is the means used for the mixing of the sludge?

A. Magnetic stirrer
B. Electrically driven stirrer
C. Mechanical mixing
D. By means of bubbles
Answer» E.
Discussion
5.

What is the product gases released at the end of the UASB process?

A. Methane
B. Methane and carbon-dioxide
C. Oxygen and carbon-dioxide
D. Carbon-dioxide
Answer» C. Oxygen and carbon-dioxide
Discussion
6.

What is the size of the microbial granules?

A. 0.3-0.6 mm
B. 0.5-0.8 mm
C. 1-3 mm
D. 3-6 mm
Answer» D. 3-6 mm
Discussion
7.

_________ at the top prevent an outflow of the sludge blanket.

A. Rubber cock
B. Out pipe
C. Baffle
D. Stopper
Answer» D. Stopper
Discussion
8.

_____ breaks down the organic matter.

A. Bacteria
B. Fungi
C. Virus
D. Algae
Answer» B. Fungi
Discussion
9.

A sludge blanket in the reactor is ______

A. At the top
B. At the bottom
C. Absent
D. In between
Answer» E.
Discussion
10.

How does the wastewater enter the reactor?

A. Bottom
B. Top
C. Side
D. Top and side
Answer» B. Top
Discussion
11.

UASB is only used for lower levels of treatment.

A. True
B. False
Answer» C.
Discussion
12.

UASB is an anaerobic reactor.

A. True
B. False
Answer» B. False
Discussion