When helium is allowed to expand into vacuum, heating effect is observed. Its reason is that [CPMT 1987]

The boiling point of helium is the lowest among the elements

The inversion temperature of helium is very low

When helium is allowed to expand into vacuum, heating effect is observ

1.	When helium is allowed to expand into vacuum, heating effect is observed. Its reason is that [CPMT 1987]
A.	Helium is an ideal gas
B.	Helium is an inert gas
C.	The inversion temperature of helium is very low
D.	The boiling point of helium is the lowest among the elements
Answer» D. The boiling point of helium is the lowest among the elements

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When helium is allowed to expand into vacuum, heating effect is observed. Its reason is that [CPMT 1987]

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