If helium is allowed to expand in vacuum, it liberates heat because

Assertion : When helium is allowed to expands into vacuum, heating effect is observed. Reason : The inversion temperature of helium is very low.

When helium gas is allowed to expand into vaccum, heating effect is observed. The reason for this is (Assume He as a non ideal gas)

Inversion temperature of helium is very low. So when helium is allowed to expand into vacuum it gets

An ideal gas is allowed to expand in vacuum in rigid insulator container. Choose the correct alternative (s).

An ideal gas is allowed to expand in vacuum in rigid insulator container. Choose the correct alternative (s).

When an ideal gas expands in vacuum, no cooling is observed because the molecules