B:-gun metal

C:-nickel chrome alloy
D:-brass

Correct Answer:- Option-A

Question49:-The system of water distribution which is suited to a city growing imregularly is .....

A:-grid iron system
B:-radial system
C:-ring system
D:-tree system
Correct Answer:- Option-D
Question50:-Which tool is used for heating while carrying out soldering .....
A:-torch lamp
B:-blow lamp
C:-holding lamp
D:-winding lamp
Correct Answer:- Option-B
Question51:-Rubber ring joints can be provided in the pipe lineto .....
A:-water free seal
B:-water tight seal
C:-water peel seal
D:-none of the above
Correct Answer:- Option-B
Question52:-What is the use of hand taps .....
‏سی ری‎ threads
B:-external threads
C:-internal gauge
D:-intemnal drilling
Correct Answer:- Option-A
Question53:-In an acetylene cylinder the acetylene is dissolved in .....
A:-carbon dioxide
B:-water
C:-acetone
D:-mercury
Correct Answer:- Option-C
Question54:-Which grade G | pipe is used for water supply.....
கவின
B:-blue
‏لیت‎
‎D:-brown
‎Correct Answer:- Option-B
Question55:-The angle of metric thread is .....
A:-60 digree
B:-55
C:-90 digree
D:-47 digree
Correct Answer:- Option-A
Question56:-What are the diameter of A C pipes availablein .....
A:-4 em to 100 em
B:-5 100 0
C:-2 em to 100 cm
D:-6 cm to 100 cm
Correct Answer:- Option-C
Question57:-Name the tool used to check intemal pipe threads .....

Correct Answer:- Option-C
Question58:-When pressure test can be started in solvent welder PVC pipe line