F-Gas English Low GWP
Všetky otázky
HFC | Flammable | CO₂ | NH₃
Ľahké otázky |
Stredne ťažké otázky |
Ťažké otázky
1
Stredne ťažká
Why is ammonia (R717) classed as a toxic refrigerant?
| Because it does not react with water, making neutralisation difficult |
| Because it is heavier than air and displaces oxygen |
| Because it is colourless and odourless and therefore hard to detect |
| It severely irritates the respiratory tract, eyes and skin, and is poisonous when inhaled at higher concentrations |
2
Stredne ťažká
Which property of ammonia helps people detect a leak early?
| A very low odour threshold (a few ppm) |
| It is odourless |
| It is yellow in air |
| It is denser than air |