Explore topic-wise MCQs in Waste Water Engineering.

This section includes 22 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.

Which of the following statements regarding systems of plumbing for drainage of buildings is not correct?

A. Only one pipe is used in the single stack system
B. A separate vent pipe is provided in one pipe system
C. The traps of basins are directly connected to the vent pipe in the partially ventilated single stack system
D. The full form of S.W.P. is soil and waste pipe
Answer» D. The full form of S.W.P. is soil and waste pipe
Discussion
2.

The depth of a sludge soak pit varies from _____________

A. 0.5-1.75 m
B. 2.5-4 m
C. 5-6.5 m
D. 8-9.5 m
Answer» C. 5-6.5 m
Discussion
3.

The diameter of a sludge soak pit varies from __________

A. 0.5-1 m
B. 1-1.5 m
C. 2-3 m
D. 5-6 m
Answer» D. 5-6 m
Discussion
4.

In the two-pipe system for the drainage of buildings, the discharge from the water closet is connected to the waste pipe while the discharge from the sinks and baths is connected to the soil pipe.

A. True
B. False
Answer» C.
Discussion
5.

The outlet pipe in the septic tank is kept about _________ lower than the inlet pipe.

A. 5 cm
B. 10 cm
C. 15 cm
D. 30 cm
Answer» D. 30 cm
Discussion
6.

In the two-pipe system for the drainage of buildings, the discharge from the waste pipe is disconnected from the drain by using __________

A. Gully trap
B. Silt trap
C. Floor trap
D. Grease trap
Answer» B. Silt trap
Discussion
7.

One pipe system is cheaper than the single stack system for the drainage of buildings.

A. True
B. False
Answer» C.
Discussion
8.

Partially ventilated single stack system is the modified form of __________

A. Single stack system and two-pipe system
B. Single stack system and one pipe system
C. One pipe system and two-pipe system
D. Two pipe system
Answer» C. One pipe system and two-pipe system
Discussion
9.

The single stack system if effective only in the case when the traps are filled with water seal of depth not less than _________

A. 15 mm
B. 50 mm
C. 75 mm
D. 100 mm
Answer» D. 100 mm
Discussion
10.

_______ is used to clean blockage in the line.

A. Lateral chamber
B. Main chamber
C. Inspection chamber
D. Sewer chamber
Answer» D. Sewer chamber
Discussion
11.

________IS_USED_TO_CLEAN_BLOCKAGE_IN_THE_LINE.?$

A. Lateral chamber
B. Main chamber
C. Inspection chamber
D. Sewer chamber
Answer» D. Sewer chamber
Discussion
12.

What is the percentage of purification of septic tank effluent?$

A. 30%
B. 50%
C. 70%
D. 90%
Answer» D. 90%
Discussion
13.

What_is_the_shape_of_the_septic_tank?$

A. Square
B. Rectangle
C. Circular
D. Oval
Answer» C. Circular
Discussion
14.

________ should not be placed near water body.

A. Power generator
B. Soak pit
C. Pump stations
D. Houses
Answer» C. Pump stations
Discussion
15.

Grease should not be allowed to enter the normal drainage system?

A. True
B. False
Answer» B. False
Discussion
16.

What is the recommended slope ratio for soil water pipes?

A. 1:12
B. 1:20
C. 1:30
D. 1:40
Answer» E.
Discussion
17.

What is the minimum diameter of the pipe used to collect black water?

A. 50 mm
B. 75 mm
C. 100 mm
D. 125 mm
Answer» D. 125 mm
Discussion
18.

What is the water from urinals called?

A. Black water
B. Yellow water
C. Grey water
D. Brown water
Answer» B. Yellow water
Discussion
19.

What is the wastewater from kitchen sinks called?

A. Grey water
B. Black water
C. Yellow water
D. Brown water
Answer» B. Black water
Discussion
20.

What is the minimum diameter of pipes used for drainage of waste water?

A. 50 mm
B. 75 mm
C. 100 mm
D. 105 mm
Answer» C. 100 mm
Discussion
21.

Submersible pumps require high maintenance.

A. True
B. False
Answer» C.
Discussion
22.

How many types of pumps are present?

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