Properties of Gases in Plumbing and Domestic Heating

Which of the following is included in the list of gases that learners will understand the properties of by the end of the session?

• Oxygen

• LPG

• Nitrogen

• Helium

Which gas is NOT mentioned as one of the gases whose properties will be covered in the session?

• Air and steam

• Natural gas

• Carbon dioxide

• Hydrogen

Why is it important for learners in Plumbing and Domestic Heating to understand the properties of refrigerant gases?

• Because refrigerant gases are used in electrical wiring

• Because refrigerant gases are essential for heating and cooling systems

• Because refrigerant gases are only used in cooking appliances

• Because refrigerant gases are not used in plumbing at all

Which of the following is NOT listed as one of the six principal gases in the building services industry?

• Oxygen

• Air

• Steam

• LPG

According to the learning material, how many principal gases are identified in the building services industry?

• Four

• Six

• Five

• Seven

Which gas from the list is commonly used as a fuel in domestic heating systems?

• LPG

• Carbon dioxide

• Refrigeration gases

• Steam

If a building services engineer is working with a gas used for cooling systems, which principal gas from the list are they most likely dealing with?

• Refrigeration gases

• Natural gas

• Steam

• Air

What is the primary use of air in warm-air heating systems?

• To cool the air in the property

• To distribute warm air by means of a fan

• To increase water pressure

• To remove carbon dioxide from the air

Which of the following is a use of high-pressure air in plumbing and heating activities?

• To heat water

• To clear blocked drains

• To cool radiators

• To lubricate pipes

How is air used in the testing of water and gas pipework installations?

• It is used to heat the pipes

• It is used to pneumatically pressure test the installations

• It is used to clean the pipes

• It is used to lubricate the joints