Explore topic-wise MCQs in Waste Water Engineering.

This section includes 26 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.

The size of the rainwater pipe commonly used in house drainage is _________

A. 40 mm
B. 75 mm
C. 90 mm
D. 115 mm
Answer» C. 90 mm
Discussion
2.

Bell-type flushing cistern is an example of ___________

A. Valveless siphonic cistern
B. Valve fitted siphonic cistern
C. Tubeless septic cistern
D. Tube fitted septic cistern
Answer» B. Valve fitted siphonic cistern
Discussion
3.

The size of the vent pipe commonly used in house drainage is ________

A. 30 mm
B. 100 mm
C. 50 mm
D. 75 mm
Answer» D. 75 mm
Discussion
4.

Bowl type urinals are used in public buildings while stall type urinals are used in residential buildings.

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

The flushing cistern in the Indian type water closet is normally kept ________ above the closet.

A. 2 metres
B. 4 metres
C. 8 metres
D. 10 metres
Answer» B. 4 metres
Discussion
6.

Indian type water closet is used in squatting position while European type water closet cannot be conveniently used in squatting position.

A. True
B. False
Answer» B. False
Discussion
7.

Which of the following is not a type of water closets?

A. Indian-type water closet
B. Spanish-type water closet
C. European-type water closet
D. Anglo-Indian type water closet
Answer» C. European-type water closet
Discussion
8.

What is the ratio of cement to be used to plaster the drain at the bottom of the camber?

A. 1:1
B. 1:2
C. 2:4
D. 1:3
Answer» C. 2:4
Discussion
9.

What is the depth of concrete required for half-round channels for surface drains?

A. 50 mm
B. 75 mm
C. 100 mm
D. 105 mm
Answer» C. 100 mm
Discussion
10.

What is the size of preferred taps for wash basins?

A. 10 mm
B. 12 mm
C. 14 mm
D. 15 mm
Answer» C. 14 mm
Discussion
11.

What is the diameter of flush pipe?

A. 30 mm
B. 32 mm
C. 34 mm
D. 36 mm
Answer» C. 34 mm
Discussion
12.

WHAT_IS_THE_DIAMETER_OF_FLUSH_PIPE??$

A. 30 mm
B. 32 mm
C. 34 mm
D. 36 mm
Answer» C. 34 mm
Discussion
13.

What is the depth of concrete required for half-round channels for surface drains?$

A. 50 mm
B. 75 mm
C. 100 mm
D. 105 mm
Answer» C. 100 mm
Discussion
14.

What_is_the_size_of_preferred_taps_for_wash_basins?$

A. 10 mm
B. 12 mm
C. 14 mm
D. 15 mm
Answer» C. 14 mm
Discussion
15.

What is the quantity of powder required in 1000 litres of water for sterilization?

A. 100 grams
B. 150 grams
C. 200 grams
D. 250 grams
Answer» C. 200 grams
Discussion
16.

What is the number of coats of paint required for manhole covers?

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
17.

What is the depth of brick masonry required in inspection chambers?

A. 1 m
B. 1.2 m
C. 1.5 m
D. 1.8 m
Answer» C. 1.5 m
Discussion
18.

What_is_the_ratio_of_cement_to_be_used_to_plaster_the_drain_at_the_bottom_of_the_camber?

A. 1:1
B. 1:2
C. 2:4
D. 1:3
Answer» C. 2:4
Discussion
19.

What is the capacity of the preferred low level flushing cistern?

A. 10 litres
B. 15 litres
C. 20 litres
D. 25 litres
Answer» C. 20 litres
Discussion
20.

What is the preferred size of water closet pan?

A. 10”
B. 15”
C. 20”
D. 25”
Answer» E.
Discussion
21.

What is the expected depth tolerance in bricks?

A. 0.5 mm
B. 1.0 mm
C. 1.5 mm
D. 2.0 mm
Answer» D. 2.0 mm
Discussion
22.

What is the standard brick size?

A. 70*100*200
B. 75*115*225
C. 75*110*225
D. 75*115*220
Answer» C. 75*110*225
Discussion
23.

The mixing time of concrete prior to placement should not exceed 20 minutes.

A. True
B. False
Answer» B. False
Discussion
24.

What is the maximum specification for water cement ratio?

A. 0.2
B. 0.4
C. 0.6
D. 0.8
Answer» D. 0.8
Discussion
25.

Cast iron pipes should confirm to IS 1729.

A. True
B. False
Answer» B. False
Discussion
26.

What is the preferred class of iron pipes?

A. A
B. B
C. C
D. D
Answer» D. D
Discussion