| Post Name | JUNIOR INSTRUCTOR(PLUMBER) |
|---|---|
| Question Paper Code | 045/2019/OL |
| Category Code | 163/2018 |
| Date of Test | 3 October 2019 |
| Medium of Question | ENGLISH |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
The water closet having an integral part of trap S and P type out let have a water seal size of .....
Answer
C. 75 mm
2
Which type of tap is used for hot and cold water pipe line in a system .....?
Answer
B. 2 or 3 in mixer tap
3
Collar joint shall be finished of with a fillet sloping at a surface angle of .....
Answer
D. 45°
4
Sewer pipe may have to be laid under the condition of .....
Answer
B. Trench
5
A device used in kitchens serving hotels dinning rooms club houses and restaurants is .....
Answer
A. Grease basin
6
In a hot water system expansion / vent pipes are installed on the cylinder and boiler because they.....
Answer
D. Release excess steam and water
7
The pump attached with impeller and pump is .....
Answer
A. Mono block pump
8
For cutting thin tubing the most suitable pitch of the hack saw blade is .....
Answer
B. 0.8 mm
9
The hose pipe for the oxygen line is .....
Answer
A. Black
10
Dual systems of distribution means .....
Answer
C. Gravity and Pumping system
11
The space between the teeth of a handsaw is called .....
Answer
A. Gullet
12
Which bond is commonly used for .....
Answer
D. English bond
13
The clearance angle of a drill is .....
Answer
B. 8° to 12°
14
What is usually the included angle of the conical point of a scriber .....
Answer
A. 15°
15
One pascal is equal to .....
Answer
B. 1 Newton/m²
16
Ferrous metal is an alloy of .....
Answer
C. iron and carbon
17
In which pipes are used in water providing plants .....
Answer
A. C.I. Pipe
18
Cast iron is used for manufacturing machine beds because .....
Answer
B. It can resist more compressive stress
19
A device installed in a drainage system to prevent reverse flow is .....
Answer
A. back water valve
20
In metric micro meters what is the pitch of the spindle thread
Answer
B. 0.5 mm
21
What is the term generally employed for a piece of pipe which is threaded on both ends and less than 12 inches long?
Answer
A. coupling
22
Pipe wrench is used for pipes of diameter.....
Answer
D. 15 mm to 50 mm
23
If the globe valve begins to leak between the packing nut and valve steam .....
Answer
B. packing to be replaced
24
the lower most level or surface of a sewer is known as .....
Answer
A. invert
25
What process is used to remove permanent hardness in water .....
Answer
C. base exchange process
26
Dug wells are also known as .....
Answer
A. draw wells
27
What should be done to remove tapped air in centrifugal pump .....
Answer
D. priming
28
What is provided in elevated storage reservoir for circulation of air .....
Answer
B. ventilator
29
What type of bacteria treats waste in percolation area?
Answer
C. aerobic
30
The cistern which is operated by a chain is called .....
Answer
B. Bell type cistern
31
Hardness that cannot be removed by boiling the water is called
Answer
C. permanent hardness
32
Galvanized iron is coated with .....
Answer
C. Zinc
33
What you should be sure you have in plenty before considering buying a solar water heater
Answer
A. abundant sunshine
34
There are two primary chemicals used to purify water namely .....
Answer
A. iodine and chlorine
35
Which material is used for joining C.I. Pipes?
Answer
B. Lead and lead wool
36
What is used at the junction of house sewer and municipal sewer?
Answer
C. Intercepting trap
37
What is used to overcome siphonic action
Answer
A. anti siphonage pipe
38
What happens if cast iron pipes are coated with cool tar
Answer
B. prevent corrosion
39
Which component in gully trap is used to prevent gases from entering waste line
Answer
C. water seal
40
Which accessories is used to change the direction flow in the pipe .....
Answer
D. fittings
41
The pipe fitting used to connect a service pipe to a water main is called as .....
Answer
B. ferrule
42
In septic tank the ventilation pipe usually provided is of .....
Answer
C. 75 mm dia
43
Flogging is the method of generating a mist for the application of .....
Answer
C. sanitizers
44
Gate valve is one of the most common valves used in the main supply lines to the .....
Answer
B. water supply system
45
Air lift pump is installed to draw more water from the deep well the pump is operated by .....
Answer
C. compressed air
46
White metal is an alloy of
Answer
C. copper, zinc, tin and Antimony
47
Dresser coupling and Victaulic joint basically are .....
Answer
C. mechanical joint
48
Which one of the following alloys can resist salt water corrosion .....
Answer
A. zinc alloy
49
The system of water distribution which is suited to a city growing irregularly is .....
Answer
D. tree system
50
Which tool is used for heating while carrying out soldering .....
Answer
B. blow lamp
51
Rubber ring joints can be provided in the pipe line to .....
Answer
B. water tight seal
52
What is the use of hand taps .....
Answer
A. internal threads
53
In an acetylene cylinder the acetylene is dissolved in .....
Answer
C. acetone
54
Which grade G I pipe is used for water supply.....
Answer
B. blue
55
The angle of metric thread is .....
Answer
A. 60 digree
56
What are the diameter of A C pipes available in .....
Answer
C. 2 cm to 100 cm
57
Name the tool used to check internal pipe threads .....
Answer
C. pipe plug threads
58
When pressure test can be started in solvent welder PVC pipe line
Answer
A. after 24 hours
59
Where are collar joints used .....
Answer
B. small diameter A C pipe
60
Which is the place preferred to fix scour valve .....
Answer
A. lowest point in pipe line
61
Spindle of gate valve rotates without closing due to .....
Answer
A. spindle thread badly worn-out
62
What is the size of manhole generally constructed within compound for house drainage .....
Answer
B. 90 x 80 cm
63
Name the valve is used to regulate the pressure in pipe line .....
Answer
A. relief valve
64
what is the size of frog in brick .....
Answer
A. 100 mm length x 40 mm width x 10 to 20 mm depth
65
Cross cut chisel is used for .....
Answer
C. key ways
66
Which types of pipes can be cut easily by pipe cutter .....
Answer
D. G.I. Pipe
67
Name the apparatus used for testing slump .....
Answer
C. Slump cone test
68
Which method of casting C.I. pipes gives good result .....
Answer
C. centrifugal casting
69
What is the range of S.W. pipes available in the market .....
Answer
A. 100 to 600 mm
70
Which side of mixing tap hot water line to be connected .....
Answer
B. Left side
71
How to prevent algae growth in O.H. tank?
Answer
A. copper sulphate
72
What is check the alignment and condition of inside the pipe .....
Answer
B. mirror test
73
How many days curing is required for S.W. pipe joints .....
Answer
A. 7 days
74
What is the size of flush pipe for low level flushing cistern
Answer
B. 40 mm
75
What causes the siphonic action in soil pipe .....
Answer
C. sucked air
76
What instrument is used while conducting air test in pipe line .....
Answer
A. manometer
77
State the size of ball used in ball test .....
Answer
A. 13 mm less than inside diameter of pipe
78
What is the use of NAHNI trap .....
Answer
A. to collect waste water from bath room
79
Why mono block pumps are more popular .....
Answer
B. small in size
80
How many pipes are there in a one pipe system .....
Answer
D. two
81
What are the materials required for flanged joint .....
Answer
C. nut and bolt
82
How much clearance from wall to be kept while laying G.I. pipe internally
Answer
A. 1.5 cm
83
What is the general fixing height of wash basin from floor level .....
Answer
A. 80 cm
84
What is height of fixing of automatic cistern for urinal .....
Answer
B. 1900 mm
85
How many types of flushing cisterns are available based on operation .....
Answer
D. 2 types
86
What is the size of waste coupling for kitchen sink
Answer
B. 50 mm
87
the brick or stone used in corner masonry of a wall is called .....
Answer
C. quoin closer
88
Which part ensures uniform pressure on the measuring faces in a micrometer .....
Answer
A. ratchet stop
89
What is plate with a short handle and is used mainly to hold mortar. What is this tool .....
Answer
C. hawk
90
Rust is formed from iron and which other element .....
Answer
A. oxygen
91
In the context of water purification RO; stands for .....
Answer
A. reverse osmosis
92
The use of asbestos cement is banned in some countries because .....
Answer
B. it leads to health problems
93
Metals possess physical and mechanical properties. Which one of the following is a physical property of metals?
Answer
C. Fusibility
94
Which one of the following is the resistance of a metal to elastic deformation .....
Answer
A. stiffness
95
Displacement pumps are of two types .....
Answer
B. reciprocating and rotary
96
A portion of the plumbing system that receives discharges of soil and waste stacks within the building and conveys the same to the house sewer is .....
Answer
D. house drain
97
A plumbing fixture used for washing the middle private part of the body especially the Genitals is .....
Answer
A. bidet
98
What is boiling point of water in Fahrenheit (F) scale .....
Answer
B. 212°f
99
Which test is applied in underground drains for soundness.....
Answer
C. water test
100
What are the two sub systems in your home plumbing .....
Answer
A. incoming fresh water and outgoing waste water
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