NEW
Font size
S
M
L
XL
WorksheetsD14 FACE THE CHALLENGE
Total questions: 35
Worksheet time: 35mins
Name
Class
Date
1.
Which device allows sewer gases to escape without entering the building?
a)
Vent pipe
b)
Soil pipe
c)
Floor trap
d)
Clean-out
2.
Which fitting is provided at the upper end of a drainage system for maintenance?
a)
Clean-out
b)
Gully trap
c)
Manhole
d)
Intercepting trap
3.
Which of the following is not a function of house drainage?
a)
Disposal of rainwater
b)
Ventilation
c)
Wastewater removal
d)
Heat insulation
4.
What is the function of a Nahani trap?
a)
Control pressure
b)
Connect roof pipe
c)
Drain bathroom water
d)
Remove grease
5.
Septic tanks are usually constructed from:
a)
Wood
b)
Steel
c)
Reinforced cement concrete
d)
Glass
6.
What is the standard size of a manhole cover used in roads?
a)
200 mm
b)
450 mm
c)
600 mm
d)
900 mm
7.
Which of the following pipes is specifically used for removing kitchen waste?
a)
Rainwater pipe
b)
Waste pipe
c)
Soil pipe
d)
Vent pipe
8.
Why is a vent pipe extended above the roof level?
a)
Improve flow
b)
Provide lighting
c)
Prevent backflow
d)
Release gases safely
9.
A house drain must always be laid with a slope to:
a)
Reduce smell
b)
Increase pressure
c)
Ensure flow by gravity
d)
Support ventilation
10.
What is the typical shape of a floor trap?
a)
L-shaped
b)
Straight
c)
U-shaped
d)
T-shaped
11.
Which sanitary fitting is essential in every bathroom floor?
a)
Sink
b)
Wash basin
c)
Floor trap
d)
Urinal
12.
Which of the following is placed at every change in direction of a sewer line?
a)
Manhole
b)
Vent pipe
c)
Floor trap
d)
Gully trap
13.
Which system uses two separate pipelines for sewage and stormwater?
a)
Combined system
b)
Single stack
c)
Separate system
d)
One pipe system
14.
What causes siphonage in traps?
a)
Ventilation
b)
Excess slope
c)
Negative pressure
d)
Water overflow
15.
Which type of trap is used in industrial areas for oil removal?
a)
Grease trap
b)
Floor trap
c)
Intercepting trap
d)
Vent trap
16.
What is the usual water seal depth in a P-trap?
a)
10 mm
b)
25 mm
c)
50 mm
d)
100 mm
17.
Why is proper slope important in a drainage line?
a)
To reduce noise
b)
To increase pipe strength
c)
To prevent clogging
d)
To increase odor
18.
Which of the following is a component of a septic tank?
a)
Vent pipe
b)
Baffle wall
c)
Gully trap
d)
S-trap
19.
Which sanitary fitting removes wastewater from washbasins?
a)
Urinal
b)
Bottle trap
c)
Gully trap
d)
Intercepting trap
20.
Which trap is commonly used with pedestal washbasins?
a)
S-trap
b)
Bottle trap
c)
Floor trap
d)
Grease trap
21.
Which of the following is used to access drainage pipes inside buildings?
a)
Inspection chamber
b)
Manhole
c)
Access door
d)
Clean-out
22.
What is the purpose of a gully trap?
a)
Receive kitchen waste
b)
Connect W.C.
c)
Collect rainwater
d)
Receive wastewater from floors and prevent gas entry
23.
The pipe carrying rainwater is also called:
a)
Waste pipe
b)
Soil pipe
c)
Downpipe
d)
Vent pipe
24.
Which of the following is a disadvantage of S-trap?
a)
Large water seal
b)
Noisy
c)
Risk of self-siphonage
d)
Too long
25.
The primary use of a grease trap is to:
a)
Catch insects
b)
Collect solids
c)
Remove oils and fats
d)
Block gases
26.
A single stack system reduces the need for:
a)
Waste pipe
b)
Vent pipe
c)
Soil pipe
d)
Inspection chamber
27.
In which case is an intercepting trap essential?
a)
High-rise building
b)
Public sewer connection
c)
Rooftop rainwater drain
d)
Bathroom connection
28.
What is provided in a manhole to allow stepping in?
a)
Steel bars
b)
Steps
c)
Hooks
d)
Anchor rods
29.
Grease traps are often placed:
a)
Near W.C.
b)
In rooftop
c)
Before septic tank
d)
In kitchen waste line
30.
Which component ensures air circulation in drainage system?
a)
Vent pipe
b)
Soil pipe
c)
Trap
d)
Manhole
31.
A bottle trap is most suitable for:
a)
Toilet
b)
Bath tub
c)
Urinal
d)
Wash basin
32.
In plumbing, 'siphonage' refers to:
a)
Odor spread
b)
Backflow of water
c)
Loss of water seal
d)
Slow drainage
33.
Where is a floor trap located?
a)
Toilet
b)
Under kitchen sink
c)
Bathroom floor
d)
Terrace
34.
Which trap has a vertical outlet?
a)
S-trap
b)
P-trap
c)
Intercepting trap
d)
Grease trap
35.
What connects two drainage pipes of different diameters?
a)
Reducer
b)
Coupler
c)
Y-joint
d)
Trap
Reset
