The rate of electrolytic corrosion between two dissimilar metals in the presence of water will be dependent on:

The relative density of a substance is:

____________ happens when heat travels through or along a material.

From the following, which is the WORST conductor?

__________ occurs because when molecules are heated, they heat and rise, and when they cool they fall.

___________ is heat transfer via infrared light. It transfers heat from one body to another without heating the space in between.

Heat is scientifically measured in:

STATEMENT: Lighter colours absorb more heat than darker colours.

Heat transfer is controlled by Building Regulations Part:

STATEMENT: Butane gas burns hotter than Propane gas.

__________ is commonly used in domestic properties for boilers and cooker fuel

The Ohm's Law triangle is shown as:

STATEMENT: (DC)Direct current is fed from mains electricity.

The intensity of pressure at a 15mm bib tap supplied from a storage cistern creating 5m head of water is:

Siphonage is used in which of the following plumbing components?

Permanent hardness can occur as a result of which type of salts being taken into solution?

When water changes to steam it can expand by up to how many times its original volume?

When a substance changes from a liquid to a gas, its molecules:

Which of the following will create the greatest frictional resistance to the low of water in a hot water system?

Which of the following is not a ferrous metal?

What is the SI unit of electrical current?

What is the approximate fuse rating required for a pump rated at 700 watts, fed from a 230v supply?

10 metres head of water creates approximately how many bars of water pressure?

An alloy metal is:

When water changes from a liquid to a solid, it can expand by:

Water is at its maximum density at:

The image shown is called:

Water freezes at:

Celcius to Kelvin comparison is: