Which one of the following statements regarding helium is not correct?

Options

A. It is used to fill gas bailoons instead of hydrogen because it is lighter and not flammable
B. It is used in gas cooled nuclear reactors
C. It is used to produce and sustain powerful super conducting magnets
D. It is not used as a cryogenic agent

Answer

D

Explanation

Liquid helium is used as a cryogenic agent. Therefore, statement (d) is incorrect. Rest of the given statements are correct.