1) When helium gas is allowed to expand into Vaccum, a heating effect is observed. The reason for this is (assume He as a non-ideal gas) A) He is an inert gas B) The inversion temperature of helium is very high C) The inversion temperature of helium is very low D) He has the lowest boiling point Answer: Option CExplanation:Hydrogen and helium exhibit heating effects during Joule Thomson expansion due to low inversion temperature.
