Question
Question: Which one of the following statements regarding helium is incorrect ?...
Which one of the following statements regarding helium is incorrect ?
A
It is used to produce and sustain powerful superconducting magnets
B
It is used as a cryogenic agent for carrying out
experiments at low temperatures
C
It is used to fill gas balloons instead of hydrogen because it is lighter and non-inflammable
D
It is used in gas-cooled nuclear reactors
Answer
It is used to fill gas balloons instead of hydrogen because it is lighter and non-inflammable
Explanation
Solution
Helium is twice as heavy as hydrogen. But it is a non-inflammable gas has 92% lifting power to that of hydrogen.