Q. Which one of the following statements regarding helium is incorrect?
A) Is is used to fill gas balloons instead of hydrogen because it is lighter and non- inflammable
B) It is used as a cryogenic agent for carrying out experiments at low temperatures.
C) It is used to produce and sustain powerful superconducting magnets
D) It is used in gas cooled nuclear reactors.
Explanation
(c)
Helium is not used to produce and sustain powerful superconducting magnets. All others are the uses of helium.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.