Uses of noble gases 

- Argon is used in light bulbs to provide an inert environment to prevent oxidation of the bulb filament

- Argon is used in arch welding as an insulator.

- Neon is used in street  and advertisement light

- Helium is mixed with Oxygen during deep sea diving and mountaineering.

- Helium is used in weather balloon for meteorological research instead of Hydrogen because it is unreactive /inert.

- Hydrogen when impure can ignite with an explosion.

- Helium is used in making thermometers for measuring very low temperatures