Water Hardness Quiz

What does solubility refer to in the context of water?

• The ability to dissolve gases

• The ability to dissolve solids

• The ability to dissolve liquids

• The ability to dissolve many substances while remaining liquid

What does "wholesome" water refer to?

• Water with added minerals

• Water that is used for cooking

• Drinkable water supplied by the water undertaker

• Rainwater collected for use

Which regulation covers wholesome water?

• 1999 Water Regulations

• 2005 Water Standards

• 1987 Clean Water Act

• 2010 Safe Water Directive

What must be provided with wholesome water according to the regulations?

• The bathroom sink

• The garden hose

• The kitchen sink

• The shower

What determines the pH level of water?

• The amount of air dissolved in it

• The temperature of the water

• The minerals dissolved in it

• The method of filtration used

What is the pH scale used to measure?

• Temperature

• Acidity and alkalinity

• Purity

• Solubility

What happens when rainwater becomes mildly acidic?

• It dissolves fewer minerals

• It dissolves more minerals

• It becomes wholesome

• It becomes unfit for drinking

What makes water 'very soft'?

• Filtering through peat or moorland

• Filtering through sandstone

• Filtering through calcium sulphate

• Filtering through limestone

What type of water results from filtering through calcium sulphate?

What type of water can lead to limescale build-ups when heated?