Piping and Plumbing Services Quiz

Hydrogen sulphide found in foul air, is not only toxic, it is also

• explosive

• heavy

• staining

• yellowish

Flowing inside the ventilating stacks of a sanitary plumbing system are

• fresh and foul air

• vapour and fresh air

• mainly ammonia gas

• mainly hydrogen sulphide

Traps are incorporated in a sanitary plumbing system to provide

• water seal

• ventilation

• flow control

• anti-shock to water hammer

One of the common ways to unsealing a trap is

• backflow

• contamination

• overflow

• siphonage

To prevent siphonage and compression, the sanitary plumbing system must

• use uPVC pipes

• have proper venting

• use ceramic appliances

• have proper water supply

Sanitary appliances for the One Pipe System are categorized into

• wet and dry appliance

• soil and waste appliance.

• electric and gas appliances

• toilet and kitchen appliances.

The minimum diameter of the One Pipe System soil stack is

• 50mm.

• 75mm.

• 100mm.

• 150mm.

What is the purpose of traps in a sanitary plumbing system?

• Water seal

• Ventilation

• Flow control

• Anti-shock to water hammer

Why is hydrogen sulphide found in foul air considered dangerous?

• Explosive

• Heavy

• Staining

• Yellowish

What material should be used to prevent siphonage and compression in a sanitary plumbing system?

• uPVC pipes

• Proper venting

• Ceramic appliances

• Proper water supply