Explore topic-wise MCQs in Waste Water Engineering.

This section includes 11 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 percentage of thickness that the sludge should have to undergo additional treatment?

A. Greater than 10
B. Less than 10
C. Equal to 10
D. 0.1
Answer» C. Equal to 10
Discussion
2.

What is the percentage of thickness that can be achieved for secondary sludge?

A. 1 %
B. 2 %
C. 3 %
D. 4 %
Answer» E.
Discussion
3.

What is the percentage of thickness that can be achieved for primary sludge?

A. 2-3 %
B. 4-5 %
C. 6-8 %
D. 8-10 %
Answer» E.
Discussion
4.

Which is the first step in the sludge treatment process?

A. Thickening
B. Dewatering
C. Digestion
D. Phosphorus recovery
Answer» B. Dewatering
Discussion
5.

Reducing the sludge volume increases _______

A. pH
B. temperature
C. concentration
D. water
Answer» D. water
Discussion
6.

Toxic chemicals are removed from liquid sewage by _______

A. Adsorption
B. Absorption
C. Desorption
D. Sorption
Answer» E.
Discussion
7.

Energy may be recovered from sludge as ________

A. Hydrogen gad
B. Methane gas
C. Air
D. Liquid petroleum gas
Answer» C. Air
Discussion
8.

Which of the following methods are not used for pathogen destruction?

A. Composting
B. Incineration
C. Mechanical stirring
D. Thermophilic digestion
Answer» D. Thermophilic digestion
Discussion
9.

How are the pathogens destroyed?

A. Mechanical means
B. Thermophilic conditions
C. Chemical treatment
D. Aeration
Answer» C. Chemical treatment
Discussion
10.

Solids removal can reduce sludge volume.

A. True
B. False
Answer» C.
Discussion
11.

Sludge treatment aims at reducing sludge weight and volume.

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