Helium is used
This question has multiple correct options
as a refrigerant (in liquid form) in low-temperature physics
as a substituent for nitrogen in the breathing gas for deep-sea divers
in radiation therapy
in fluorescent tubes
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Correct options are A) and B)
Helium is used for filing airships and balloons for meteorological observations.
under pressure is supplied to sea divers for respiration.
Helium is used to provide inert atmosphere in the welding of metals or alloys that are easily oxidized.
Helium is lighter than that of air and is used for inflating the tyres of big
Liquid form of Helium is used in as refrigerant.
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Argon is used:
Statement - I: He -II has high viscosity and flows downward.
Statement - II: Liquid helium is used as cryogenic liquid.
Which of the following is not true about helium?
Inversion temperature of helium is very low. So when helium is allowed to expand into vacuum it gets:
The spectrum of helium is similar to: