(D) Liquid helium is used as a cryogenic agent for carrying out various experiments at low temperatures. Therefore,statement $(d)$ is incorrect. Heliu

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It is not used as a cryogenic agent

(D) Liquid helium is used as a cryogenic agent for carrying out various experiments at low temperatures. Therefore,statement $(d)$ is incorrect. Helium is lighter than air but heavier than hydrogen,and it is non-flammable,making it safer for balloons. It is used in gas-cooled nuclear reactors and for cooling superconducting magnets.

Class 12 Chemistry p-Block Elements (Class 12)Noble gases

Medium

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

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A
It is used to fill gas balloons 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