Plumbing Scientific Principle Level 2 C&G

Which of the following is a ferrous metal?

• Iron

• Aluminium

• Lead

• Copper

What is brass an alloy of?

• Copper and Aluminium

• Copper and Zinc

• Copper and Tin

• Copper and Lead

What is the relative density of water?

• 1.28

• 2.70

• 1.00

• 0.90

What is the coefficient of linear expansion for plastic uPVC?

• 0.000011

• 0.00018

• 0.000029

• 0.000016

What does DZR stand for in modern brass components?

• Dezincification Reactive

• Dezincification Retardant

• Dezincification Resistant

• Dezincification Reversible

Which material is known for its malleability?

• Copper

• Lead

• Steel

• Aluminium

On earth, gravity is:

• 90.8N

• 9.81N

• 1.6N

• 10.6N

Given that all holes have the same diameter, the water pressure is greatest at hole

• A

• B

• C

• D

The process of siphonage utilises

• Vacuum pumps.

• Capillary action

• Atmospheric pressure

• Specific gravity

• Water pressure

Capillary attraction would be greatest in tube

• A

• B

• C

• D