During an isothermal expansion of an ideal gas,its:

Which of the following processes involves zero work done?

One mole of an ideal gas at $300 \ K$ and $20 \ atm$ expands to $2 \ atm$ under isothermal and reversible conditions. The work done by the gas is $-x \ kJ \ mol^{-1}$. The value of $x$ is $(R = 8.3 \ J \ K^{-1} \ mol^{-1})$

Which of the following is a path function?

Which of the following is an example of an intensive property of the system?

Which of the following reactions shows work of compression?