Explore topic-wise MCQs in Waste Water Engineering.

This section includes 10 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 retention time considered for a UASB while designing at > 26 degree Celsius?

A. t3-5 h
B. t10-14 h
C. t7-9
D. t6-8
Answer» E.
Discussion
2.

What is the retention time considered for a UASB while designing at 22-26 degree Celsius?

A. t3-5 h
B. t10-14 h
C. t7-9 h
D. t10-12 h
Answer» D. t10-12 h
Discussion
3.

What is the retention time considered for a UASB while designing at 16-19 degree Celsius?

A. t3-5 h
B. t10-14 h
C. t22 h
D. t18 h
Answer» C. t22 h
Discussion
4.

What is the upflow velocity considered for a UASB while treating domestic waste water?

A. t1-2 m/h
B. t2-3 m/h
C. t0.8-1 m/h
D. t3-4 m/h
Answer» D. t3-4 m/h
Discussion
5.

What is the upflow velocity considered for a UASB while treating partially soluble COD?

A. t1-1.25 m/h
B. t1.5-2 m/h
C. t2-3 m/h
D. t3-4 m/h
Answer» B. t1.5-2 m/h
Discussion
6.

What is the upflow velocity considered for a UASB while treating 100% soluble COD?

A. t1-3 m/h
B. t4-6 m/h
C. t6-8 m/h
D. t8-10 m/h
Answer» B. t4-6 m/h
Discussion
7.

What is the COD loading rate assumed for an Up flow anaerobic sludge blanket (UASB)?

A. t4-12 Kg COD/m<sup>3</sup>
B. t12-20 Kg COD/m<sup>3</sup>
C. t2-4 Kg COD/m<sup>3</sup>
D. t20-25 Kg COD/m<sup>3</sup>
Answer» B. t12-20 Kg COD/m<sup>3</sup>
Discussion
8.

What is the minimum hydraulic retention time for UASB?

A. t1 hour
B. t2 hour
C. t3 hour
D. t4 hour
Answer» C. t3 hour
Discussion
9.

What is the minimum influent COD load beneficial for the process?

A. t100 mg COD/Lm
B. t200 mg COD/Lm
C. t250 mg COD/Lm
D. t350 mg COD/Lm
Answer» D. t350 mg COD/Lm
Discussion
10.

What is the temperature which should not be exceeded for the reaction?

A. t20 C
B. t32 C
C. t38 C
D. t45 C
Answer» D. t45 C
Discussion