CW01_sources and properties of water

Multiple Choice

What are the sources and properties of water?

• Rivers and lakes

• Rain and snow

• Groundwater

• Desalination

Multiple Choice

What are the main stages of the rainwater cycle as illustrated in the diagram?

• Evaporation

• Condensation

• Precipitation

• Collection

Multiple Choice

What are the two main processes described in the rainwater cycle?

• Evaporation and Precipitation

• Condensation and Evaporation

• Rain and Rivers

• Clouds and Seas

Multiple Choice

What are the two main categories of water sources in the UK?

• Surface sources

• Underground sources

• Both A and B

• None of the above

Multiple Choice

What are the different types of wells mentioned in the image?

• Deep

• Shallow

• Artesian

• All of the above

Multiple Choice

What are the main differences between boreholes and springs as sources of underground water?

• Boreholes are larger than springs

• Springs are man-made

• Boreholes require maintenance

• Springs create streams

Multiple Choice

What are the two main types of water mentioned in the image?

• Fresh and Salt

• Hard and Soft

• Ice and Water

• Clean and Dirty

Multiple Choice

What percentage of the Earth's surface is water?

• 50%

• 70%

• 90%

• 100%

Multiple Choice

What is the term used to describe the ability of water to absorb minerals?

• Plumbo solvency

• Water hardness

• Acidic solution

• Mineral absorption

Multiple Choice

What is the difference between permanent hard water and temporary hard water?

• Permanent hard water contains calcium carbonates

• Temporary hard water can be removed by boiling

• Permanent hard water cannot be removed by boiling

• Temporary hard water does not cause scaling

Multiple Choice

What is soft water and how does it differ from hard water?

• Water with high calcium content

• Water that is easy to lather with soap

• Water that causes plumbing issues

• Water that is free from sulphates

Multiple Choice

What are the classifications for water based on Degrees Clark and ppm CaCO3?

• Soft

• Moderately soft

• Slightly hard

• Very hard

Multiple Choice

What is the equivalent quantity of calcium carbonate (CaCO₃) in milligrams per litre for one degree Clark?

• 64.8 mg

• 14.254 mg

• 10 mg

• 17.8 mg

Multiple Choice

What does a pH value of 7 indicate about water?

• It is acidic

• It is alkaline

• It is pure water

• It is aggressive towards pipework

Multiple Choice

Alkaline perms carry a pH of:

• 8.00-9.5

• 10-14

• 6.0-7.5

• 4.5-5.5

Multiple Choice

What are the responsibilities of plumbers under the Water Regulations regarding water quality?

• To ensure water is always hot

• To maintain the quality of water supplied

• To install new water pipes

• To check for leaks regularly

Multiple Choice

What are the different fluid categories and their descriptions?

• Wholesome water, Slight health risk, Significant health risk, Severe health risk

• Wholesome water, Contaminated water, Clean water, Polluted water

• Drinking water, Bath water, Industrial water, Waste water

• Hot water, Cold water, Softened water, Rain water

Multiple Choice

What is the percentage of water used for bathing and showering in the UK?

• 25.4%

• 21.8%

• 12.2%

• 11.7%

Multiple Choice

What are the uses of wholesome water?

• drinking water

• food production/cooking

• personal hygiene

• cleaning of clothes

Multiple Choice

What is meant by "potable water"?

• Water that is clean enough to drink

• Water that can be transported

• Water that is used to clean

• Underground water

Multiple Choice

What questions do you have regarding the plumbing topics covered?

• Installation techniques

• Safety regulations

• Material types

• Water pressure

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident