For free expansion of the gas, which of the following is true?

For free expansion of a gas which of the following is true?

During free expansion of an ideal gas which of the following remains constant ?

For two moles of an ideal gas, which of the following is true?

The given P-V diagram expansion of a gas which one of the following statement is true?

If the system is not in free fall, which of the following, statements are true about hydrostatic pressure?

If the system is not in free fall, which of the following, statements are true about hydrostatic pressure?

In the free expansion of a gas, its internal energy

For isothermal expansion , which is true?