Which one of the following statements regarding helium is

Last updated: 7/3/2023

Which one of the following statements regarding helium is incorrect is used to fill gas balloons instead of hydrogen because it is lighter and non inflammable 2 It is used as a cryogenic agent for carrying out experiments at low temperatures 3 It is used to produce and sustain powerful superconducting magnets 4 It is used in gas cooled nuclear reactors