Welcome to your F-Gas Refrigerant & ODS Regulations: Category II – installation, service and maintenance of equipment with a charge of less than 3 kg (6 kg if hermetically sealed) and leakage checking quiz which comprises of 23 multiple choice questions.

1. Which one of the following terms describes enthalpy?
1 out of 23
2. On the diagram shown, process line 5 to 6 represents?



Refrigeration, Air Conditioning & Heat Pump Pressure Enthalpy Diagram

2 out of 23
3. The function of an evaporative condenser is to
3 out of 23
4. Subcooling is established when
4 out of 23
5. The most efficient operating temperatures for a chill coldroom designed to maintain a space temperature of +20C with ‘air on’ to the condenser at +32C are
5 out of 23
6. Which one of the following refrigerants is most likely to suffer from changes in it’s composition after leakage from a static system?
6 out of 23
7. Which one of the following environmental issues is addressed by the Kyoto Protocol?
7 out of 23
8. Which one of the following refrigerants has least impact on direct global warming?
8 out of 23
9. The Energy Efficiency Ratio of a heat pump system is found from?
9 out of 23
10. As the difference between condensing temperature and evaporating temperature decreases
10 out of 23
11. Which ‘F’ Gas Category qualification is required to recover refrigerant from an air conditioning system which has a charge of 7.5 kg of R407C?
11 out of 23
12. Which of the following saturation temperatures satisfies the BS EN 378 requirement for pressure testing the high side of cooling systems fitted with air cooled condensers?
12 out of 23
13. Which of the following is most likely to increase refrigerant leakage potential from an air to water heat pump system? Excessive
13 out of 23
14. Which one of the following is the correct method for transporting recovered waste compressor oil back to licensed waste manager?
14 out of 23
15. The function of the compressor is to
15 out of 23
16. Which one of the following condenser types would run with the lowest condensing temperature?
16 out of 23
17. For every one degree Celsius that the evaporating temperature is increased, cooling capacity
17 out of 23
18. The function of an expansion valve is to
18 out of 23
19. Which one of the following refrigerants is classified as an Ozone Depleting Substance?
19 out of 23
20. Which one of the following international agreements is responsible for the phase out of HCFCs?
20 out of 23
21. Which one of the following refrigerant hazards can make an affected person feel ‘high’?
21 out of 23
22. Residual flux on the outside of a brazed copper pipe must be removed because
22 out of 23
23. Which one of the following pipe diameters is most likely to fail when strength tested with Oxygen Free Nitrogen?
23 out of 23