GAS FITTER 2 PRACTICE EXAM 2026
QUESTIONS WITH FULL SOLUTIONS GRADED
A+
● Type of plastic that becomes soft when heated and hard when cooled
is called ? Answer: Thermoplastic
● Plastic pipe used for underground gas lines is ? Answer: HD
Polyethylene
● The minimum surface temperature recommended for solvent
cementing plastic pipe is ? Answer: 5'C/40*F
● The colour of propylene DWV pipes are ? Answer: Grey
● Type of plastic similar to Polypropylene is ? Answer: Proxylene -
which is blue in colour
● Nesting of pipe refers to ? Answer: Storage of pipe with smaller sizes
inside large pipe
, ● Underground drainage systems are primarily joined with ? Answer:
Bell type (usually pvc)
● Plastic acid waste pipes may be joined by ? Answer: Fusion welds
and acid resistant mech joints
● Two best suited pipes for radiant panel heating + hot water heating
systems are ? Answer: PEX and PE/AL/PE
● Temp Sticks are used to ? Answer: Check the temperature of plastic
for fusion welding
● Types of pipe that produce toxic gases are ? Answer: PVC & CPVC
● 3 types of plastic that can be joined using solvent cement are ?
Answer: ABS, PVP, CPVC
● Formula for a 90' long radius butt weld ? Answer: 1 1/2 X NPS
● Formula for a 45' long radius butt weld ? Answer: 5/8 X NPS
● Formula for a 90' short radius butt weld elbow ? Answer: NPS X 1
QUESTIONS WITH FULL SOLUTIONS GRADED
A+
● Type of plastic that becomes soft when heated and hard when cooled
is called ? Answer: Thermoplastic
● Plastic pipe used for underground gas lines is ? Answer: HD
Polyethylene
● The minimum surface temperature recommended for solvent
cementing plastic pipe is ? Answer: 5'C/40*F
● The colour of propylene DWV pipes are ? Answer: Grey
● Type of plastic similar to Polypropylene is ? Answer: Proxylene -
which is blue in colour
● Nesting of pipe refers to ? Answer: Storage of pipe with smaller sizes
inside large pipe
, ● Underground drainage systems are primarily joined with ? Answer:
Bell type (usually pvc)
● Plastic acid waste pipes may be joined by ? Answer: Fusion welds
and acid resistant mech joints
● Two best suited pipes for radiant panel heating + hot water heating
systems are ? Answer: PEX and PE/AL/PE
● Temp Sticks are used to ? Answer: Check the temperature of plastic
for fusion welding
● Types of pipe that produce toxic gases are ? Answer: PVC & CPVC
● 3 types of plastic that can be joined using solvent cement are ?
Answer: ABS, PVP, CPVC
● Formula for a 90' long radius butt weld ? Answer: 1 1/2 X NPS
● Formula for a 45' long radius butt weld ? Answer: 5/8 X NPS
● Formula for a 90' short radius butt weld elbow ? Answer: NPS X 1
